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1721 lines
58 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
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<head>
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<title>More 2 Cent Tips & Tricks LG #48</title>
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<!--endcut ============================================================-->
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<H4>"Linux Gazette...<I>making Linux just a little more fun!</I>"
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</H4>
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<P> <hr> <P>
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<!-- QUICK TIPS SECTION ================================================== -->
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<center>
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<H1><A NAME="tips"><IMG ALIGN=MIDDLE ALT="" SRC="../gx/twocent.gif">
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More 2¢ Tips!</A></H1> <BR>
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Send Linux Tips and Tricks to <A HREF="mailto:gazette@ssc.com">
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gazette@ssc.com
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</A></center>
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<p><hr><p>
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<H3><font color="#CC0000">New Tips:</font></H3>
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<!-- BEGIN tips -->
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">2 Cent Tricks & Tips - Mounting a zip drive
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</FONT> </H3>
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Sat, 30 Oct 1999 21:48:16 -0700
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<BR>From: David <<A HREF="mailto:elvii@writeme.com">elvii@writeme.com></A>
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<P> Well, this topic has been covered a number of times, but one minor nit
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from your "Mounting a zip disk" in issue #47 - the printed tip reads:
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<P> 1) Compile in IDE Floppy support in the kernel - there is no need for
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scsi emulation unless you want auto-eject support. Also remember to
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compile in support for the filesystems you wish to have on your zip
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disks.
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<P> Under Debian potato, kernel 2.2.13, eject version 2.0.2, I am able to
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eject the zip disk from the ATAPI zip drive without using ide-scsi
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emulation. I've been able to eject it this way at least since 2.2.5 or
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so, I believe, thou I'm not sure quite when I found this out. I didn't
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have the zip when I ran 2.0.x kernels, so ide-scsi might've been needed
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there, but not anymore, it seems.
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<P> David
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">atapi zip drive comment
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</FONT> </H3>
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Tue, 02 Nov 1999 11:36:25 -0600
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<BR>From: Draper7 <<A HREF="mailto:draper7@earthlink.net">draper7@earthlink.net></A>
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<P> Hello and how are you? I just wanted to say thanks for the help
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with my linux problems and make one small comment. In the
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documentation on the atapi zip drive I think that alot of newbies
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might find it helpful if you added how to format a zip disk for the
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dos filesystem.
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<PRE>
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/sbin/mkdosfs ..........
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</PRE>
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thanks again for the help documentation!!<BR>
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Jeremy
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">Toshiba Cyber 9525 video chipset
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</FONT> </H3>
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Sat, 13 Nov 1999 01:13:22 -0500
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<BR>From: Cliff Miller <<A HREF="mailto:cliff52@usa.net">cliff52@usa.net></A>
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<P> Re: (LG 43, mailbag...)
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<P>
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From: ANTONIO SORIA (mpenas@sego.es)
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<BLOCKQUOTE>
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to buy a Toshiba Satellite S4030CDS which comes with the Trident Cyber
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9525 video card...
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</BLOCKQUOTE>
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<P> ...a good resource is
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<A HREF=http://www.741systems.com/linux/2595XDVD-install.html>
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www.741systems.com/linux/2595XDVD-install.html</A>
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">Sorting the lines in a file
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</FONT> </H3>
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Fri, 12 Nov 1999 01:37:22 -0500 (EST)
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<BR>From: Mike Smith <<A HREF="mailto:mesmith@panix.com">mesmith@panix.com></A>
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<BLOCKQUOTE>
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I have unsubscribed that address, run "uniq" on the mailing list to
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remove any other duplicates, and unsubscribed all other addresses with
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</BLOCKQUOTE>
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<P> Just in case you forgot (we all do sometimes), uniq presupposes that
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the stream it is processing is already sorted. `Sort -u' will screen
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out duplicates, too.
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">Winmotherboard
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</FONT> </H3>
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Sun, 14 Nov 1999 18:41:26 -0500
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<BR>From: Pierre Abbat <<A HREF="mailto:phma@oltronics.net">phma@oltronics.net></A>
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<P> You've heard of Winmodems, now there are Winmotherboards.
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<P> I bought a Shuttle Spacewalker HOT-591P to upgrade an existing system. I put a
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Pentium in it, tweaked the speed switches until it came up, attached the hard
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drives, turned it on again, and set the hard drive size. I got an error message:
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<P> No [active partition] found
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DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER
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<P> This is the first time I have seen a motherboard *require* that relic of the
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DOS age, the bootable partition.
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<P> Unlike the Winmodem, there is a way around this. Run cfdisk and set one of the
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partitions on hda as the active partition.
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<P> phma
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">Followup to Running UNIX At Home
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</FONT> </H3>
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Mon, 22 Nov 1999 15:38:59 -0500
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<BR>From: Rob Reid <<A HREF="mailto:reid@astro.utoronto.ca">reid@astro.utoronto.ca></A>
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<P></STRONG>From: Javier López Pérez <<A HREF="mailto:jlopezpe@idecnet.com">jlopezpe@idecnet.com></A>:</STRONG>
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<P> Hello Mr. Reid:
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<P> In your article "Running UNIX At Home" in LinuxGazette #47 you wrote:
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<BLOCKQUOTE>
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None of my cron jobs, like updating locate's database and trimming the
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log files, were being done since the computer was hardly ever on in the
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wee hours of the morning, the time chosen by the distributions
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(Slackware, then Red Hat 3.0.3, then 5.1) for housecleaning.
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</BLOCKQUOTE>
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<P> Like most home users, I have also stumbled across cron not running the
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programs it should because of my computer being off. Although the script you
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provide looks great, I was wondering if you know that there already are, to my
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knowledge, two programs that resolve this very same issue: anacron and hc-cron
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(sorry, I have not an URL to give, but I bet that a search to
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http://freshmeat.net would be useful.)
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<P> In the same article you also mention that to change runlevels you
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stop/start starter scripts by hand [...]
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<P> You can do this in a more convenient manner by using /sbin/telinit, giving
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it the runlevel you want to change to. To change from any runlevel to runlevel
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3 you would just type (as root, of course): /sbin/telinit 3 and that is all. As
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far as I know, all your programs will be SIGTERM or SIGKILL by doing this,
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while starter scripts will be called to start/stop services as needed.
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<P> I hope this information is of any help to you. I also deeply hope not to
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have
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made any big mistake in what I have said.
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<P> Best wishes.
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<P><STRONG>Rob Reid responds:</STRONG>
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<P> ----- Forwarded message from Howard Shaw
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<<A HREF=mailto:howard@tyroldata.com>howard@tyroldata.com</A>> -----
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<BLOCKQUOTE>
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First, with regard to your cron problems, you might consider using
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hc-cron.
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Here is Freshmeat's description of it...
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<P>hc-cron will remember the time when it was shut down and catch
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up jobs that have occurred during down time when it is started again.
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</BLOCKQUOTE>
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<P> ----- Forwarded message from Duckie <<A HREF=mailto:duckie@node0911.a2000.nl>duckie@node0911.a2000.nl</A>> -----
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<BLOCKQUOTE>
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Debian installation offers "profiles" nowadays. The "Personal
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workstation" profile includes anacron.
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</BLOCKQUOTE>
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<P> That's great, but groundskeeper will make sure that the commands are run at
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*convienient times for the users* as closely to the specified intervals as
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machine uptime permits. In other words, it uses batch and the others don't.
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<BLOCKQUOTE>
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You have a very good point here. I filed it as a wishlist item for
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anacron on Debian's bugtracking system, from where it'll be forwarded
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to whoever maintains the program itself.
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<P>Thanks,<BR>
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Arjan Drieman
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</BLOCKQUOTE>
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<P> ----- Forwarded message from Howard Shaw
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<<A HREF=mailto:howard@tyroldata.com>howard@tyroldata.com</A>> -----
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<BLOCKQUOTE>
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Second, with regard to your runlevel usage, while you can write scripts
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for starting your networking mechanisms, and there are valid reasons
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for doing so, you can also change your runlevel without rebooting by
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executing, as root, 'init X' where x is the runlevel. So you can start
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at runlevel 4, then use init 3 to drop to runlevel 3 and start those
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scripts, then use either init 0 to shutdown, or init 6 to restart your
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system.
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</BLOCKQUOTE>
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<P> This was the other thing people wrote to remind me: use init (or sysinit) to
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switch runlevels without rebooting. It's very useful; in going from 4 (no
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internet) to 3 (internet) it stops and restarts some services that look like
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they could have been left alone, but it does the job in a one line command!
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<P> Thanks for everyone's feedback.
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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<FONT COLOR="navy">FYI: PS/2 Port Problem In 2.2 Kernel
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</FONT> </H3>
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Mon, 22 Nov 1999 16:12:20 -0800
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<BR>From: Bovy, Steve <<A HREF="mailto:Steve.Bovy@sterling.com">Steve.Bovy@sterling.com></A>
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<P> In the past few months I have attempted to
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install RedHat 6.0 Caldera 2.2 and Caldera 2.3
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on my Compaq Presario 5630 Pentium Computer.
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<P> What I discovered is that regardless of which distro,
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or which mouse I use, any attempt to install with a
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mouse attached to the ps/2 port always fails with
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a "frozen" machine.
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<P> Caldera support and the Caldera Knowledge base has finally
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acknowledged that this problem is "real", and that they are
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looking into it.
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<!P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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ANSWER: <FONT COLOR="navy">Filename extensions for web program listings ...
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</FONT> </H3>
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Sun, 21 Nov 1999 22:41:10 -0500
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<BR>From: Jeff Rose <<A HREF="mailto:whisper@iag.net">whisper@iag.net></A>
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<P> I'm enjoying reading this issue of LG on my Palm Vx after downloading
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your text version then using a small conversion util to format into PDB
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format.
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<H4>The <I>Linux Gazette</I> Editor wrote:</H4>
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<P> Do you mean PDF? If so, which program do you use?
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<H4>Jeff clarified:</H4>
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<P> I meant *.pdb :) format using the attached 'txt2pdbdoc' utility. GNU
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ZDoc, Aportisdoc, and other utilities convert quick and hotsync quick
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for a nice 'mobile Linux-related Library'! ;-)
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<BLOCKQUOTE><EM>
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[<TT>txt2pdbdoc</TT> is at
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<A HREF=http://homepage.mac.com/pauljlucas/software.html>
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http://homepage.mac.com/pauljlucas/software.html</A>. -Ed.]
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</EM></BLOCKQUOTE>
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<P> To make things easier, I made a symbolic link from txt2pdbdoc to 2pdb,
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so I can just type
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<PRE>
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$ 2pdb {filename.you.want.2.show.on.pda} {filename.original}
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{outputfilename.pdb}
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</PRE>
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<!-- END tips -->
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<P> <hr> <P>
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<!--================================================================-->
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<H4><font color="maroon">
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Tips in the following section are answers to questions printed in the Mail
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Bag column of previous issues.
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</font></H4>
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<!-- BEGIN tips.answers -->
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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ANSWER: <FONT COLOR="navy">Terminal emulators
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</FONT> </H3>
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Sat, 30 Oct 1999 16:00:13 -0400
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<BR>From: Michael Kohne <<A HREF="mailto:mhkohne@discordia.org">mhkohne@discordia.org></A>
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<P> If what you want is a telnet program for windows that's better than
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Microsoft's, check
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http://www.geocities.com/SiliconValley/Network/1027/
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Kevterm is a very simple vt100 emulating telnet client. It's biggest
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features are that it's small, and it works. I'm personally a big fan of
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low feature count, but fully working software, and Kevterm is that in
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spades. It does everything I need
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<P> It's not very fancy, but I've found it to be very useful over time.
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<H4>From: Richard Cohen <<A HREF="mailto:vmlinuz@vmlinuz.org">vmlinuz@vmlinuz.org></A>:</H4>
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<P> http://tucows.mirror.ac.uk/term95.html (or the same page at any more local
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TUCOWS mirror) contains a list of telnet clients for Win95/98, including
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some freeware and lots of shareware. I seem to remember having heard good
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things in the past about Tera Term Pro (which is free and has a SSH
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plug-in available, if you care about that).
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<P><STRONG>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>:</STRONG>
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<P> Look for a program called "TerraTerm" on your favorite shareware site.
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There are modules for SSH connections available.
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<P> Good terminal emulators can cost $250 per workstation, and can eat up a lot
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of resources for graphic and keyboard mapping (IBM's Personal Communications
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Suite, Reflections). TerraTerm will do 95% of what you want with a
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reasonable footprint similar to Microsoft's Telnet.
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<H4>From: Pierre Abbat <<A HREF="mailto:phma@oltronics.net">phma@oltronics.net></A>:</H4>
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<BLOCKQUOTE>
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<P> I have a linux shell from my Win98 machine via a terminal login. I am
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presently using telnet to do this, however this causes profound graphical
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errors, no color, and other problems. I am looking for a better terminal. Any
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suggestions?
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</BLOCKQUOTE>
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<P> Try TeraTerm. I got mine from srp.stanford.edu; it's a doctored version that
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supports SRP authentication, though it doesn't encrypt as the SRP telnet for
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Linux does. TeraTerm does colors, but the keyboard isn't perfect, and I have to
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use u and d in less instead of pgup and pgdn.
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<P> phma
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<H4>From: Charles Hethcoat <<A HREF="mailto:CHETHCOA@oss.oceaneering.com">CHETHCOA@oss.oceaneering.com></A>:</H4>
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<P> If you are looking for a better telnet for a Windows machine, you might
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check out Tera Term Pro:
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<P> teranishi@rikaxp.riken.go.jp
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<P> It is much nicer than the plain jane Telnet that comes with Windows.
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<P> I am aware of no totally free X servers that run under Windows. If you
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will settle for a nonfree but cheap Windows X server, try the MicroImages
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X server 2.0 (or latest) from www.microimages.com. It's pretty plain, but
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works fine for connecting to Linux X clients. And it's pretty inexpensive,=
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too.
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<P> Charles Hethcoat
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<P> <hr> <P>
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<!--================================================================-->
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<a name=""></a>
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<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
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ANSWER: <FONT COLOR="navy">LS120
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</FONT> </H3>
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Sun, 31 Oct 1999 04:25:32 +0100
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<BR>From: Ghlenn Willard <<A HREF="mailto:ghlenn@presidency.com">ghlenn@presidency.com></A>
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<P> Ghlenn Willard (ghlenn@presidency.com):
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<BLOCKQUOTE>
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<P> I would like to know exactly what I need to input into the /etc/fstab concerning having OpenLinux 2.2 to see the
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LS120 drive. My system has the 1.44 floppy drive at fd0, hard drive at hda and hda1, and the cdrom at hdc. I tried the
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approach Caldera suggested for the owner of OpenLinux 1.3, it didn't work or I messed up, which is possible since I am
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still a greenhorn at this.
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</BLOCKQUOTE>
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<P> I have two HDs, hda and hdc (IDE Primary 1, IDE Secondary 1), a CD-ROM,
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hdb, (IDE Primary 2), and an LS120 as hdd (IDE Secondary 2), and it
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works well with this /etc/fstab:
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<PRE>
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/dev/hdb /cdrom iso9660 ro,noauto,user 0 0
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# This is for "DOS"-formatted disks - gets mounted with mount /B
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/dev/hdd /B vfat noauto,posix,user 0 0
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|
|
# This is for ext2-formatted disks - gets mounted with mount /E
|
|
/dev/hdd /E ext2 noauto,user 0 0
|
|
</PRE>
|
|
|
|
<P> Needless to say: the mounting points /B and /E must exist - beforehand.
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Lilo gone
|
|
</FONT> </H3>
|
|
Sun, 31 Oct 1999 11:16:28 +0100
|
|
<BR>From: Ivo Naninck <<A HREF="mailto:inaninck@solair1.inter.nl.net">inaninck@solair1.inter.nl.net></A>
|
|
|
|
<BLOCKQUOTE>
|
|
<P> My wife ran Norton antivirus and detected that the MBR was changed.
|
|
She checked the 'Repair' box. Now my LILO is gone. How do I install it
|
|
back into the MBR?
|
|
</BLOCKQUOTE>
|
|
Boot your rescue floppy and mount your root filesystem on for
|
|
example /mnt. Then run /mnt/sbin/lilo and that should fix it.
|
|
Then remove any software from/or your other OS(?) that is capable of
|
|
mucking
|
|
around with critical parts of the system.
|
|
|
|
|
|
|
|
|
|
|
|
<P><STRONG>From: Tomislav Filipcic <<A HREF="mailto:tojo@softhome.net">tojo@softhome.net></A>:</STRONG>
|
|
|
|
<P> This can be fixed easily. Get a boot floppy (or get a friend to make one
|
|
for you) and use it boot linux. When you get to the prompt just type "lilo"
|
|
and the MBR will be fixed.
|
|
|
|
|
|
<H4>From: Zon Hisham Bin Zainal Abidin <<A HREF="mailto:zon@mad.scientist.com">zon@mad.scientist.com></A>:</H4>
|
|
|
|
<P> Thank you everybody for helping me out with the LILO issue.
|
|
|
|
<P> Think I am gonna luv this Linux thingy. And the amount of support that I
|
|
have received...it's just fascinating. Keep up with the good work to
|
|
help newbies like me...so that I am able to help newer newbies in the
|
|
future.
|
|
|
|
<P> The latest problem that I face at the moment is the task of removing the
|
|
largest virus partition on my PC...that is the DOS partition :)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Dialling up my ISP (Freeserve)
|
|
</FONT> </H3>
|
|
Mon, 01 Nov 1999 12:14:10 +0000
|
|
<BR>From: Maxwell Lock <<A HREF="mailto:maxwell@reading.sgi.com">maxwell@reading.sgi.com></A>
|
|
|
|
|
|
<P> Hi there,
|
|
|
|
<P> To connect to Freeserve using RedHat, follow the instructions in the freeserve
|
|
HOWTO:
|
|
|
|
<P> http://www.damtp.cam.ac.uk/user/ig206/freeserve/
|
|
|
|
<P> and
|
|
|
|
<P> http://www.scottish.lug.org.uk/freeserve.html
|
|
|
|
<P> -Cheers, Max.
|
|
|
|
|
|
|
|
|
|
|
|
<H4>From: Steve Phipps <<A HREF="mailto:steve@sjp1.freeserve.co.uk">steve@sjp1.freeserve.co.uk></A>:</H4>
|
|
|
|
<P> I use Freeserve with Red Hat Linux and find that it works perfectly
|
|
well.
|
|
|
|
<P> I have no idea what the problem is in your case, so I'll go through my
|
|
configuration in detail. Hopefully this will enable you to find the
|
|
fault - you can always copy my setup if all else fails!
|
|
|
|
<PRE>
|
|
First of all, ensure that the file /etc/hosts.allow contains the line
|
|
|
|
ALL: LOCAL
|
|
|
|
, that /etc/hosts.deny contains the line
|
|
|
|
ALL: ALL
|
|
|
|
, that /etc/resolv.conf conatins the lines
|
|
|
|
search .
|
|
nameserver 195.92.195.94
|
|
|
|
(the number is the IP address of Freeserve's nameserver) and that
|
|
/etc/hosts contains the line
|
|
|
|
127.0.0.1 localhost
|
|
|
|
Next you need a chat script, which should be placed in the file
|
|
/etc/ppp/chatscript. Mine, which is fairly basic, is as follows:
|
|
|
|
# Set abort conditions
|
|
ABORT 'NO CARRIER'
|
|
ABORT BUSY
|
|
ABORT 'NO DIALTONE'
|
|
|
|
# Set a nice long timeout because Freeserve can be a bit slow
|
|
TIMEOUT 120
|
|
|
|
# Reset modem
|
|
'' ATZ
|
|
|
|
# Dial (0845) 079 6699
|
|
SAY 'Dialling Freeserve...\n'
|
|
OK ATDT08450796699
|
|
|
|
# Log in to remote machine
|
|
CONNECT ''
|
|
SAY 'Connection established, logging in...\n'
|
|
ogin: <username>
|
|
word: <password>
|
|
|
|
# Log in complete
|
|
SAY 'Log in successful...\n'
|
|
</PRE>
|
|
|
|
<P> Obviously, replace <username> and <password> with the appropriate values
|
|
for your account. See man chat if you want to write your own script.
|
|
|
|
<P> Finally, you need to initiate PPP. I have a file called dialup in my
|
|
home directory which simply contains the command
|
|
|
|
<PRE>
|
|
exec pppd connect 'chat -v -f /etc/ppp/chatscript' -detach crtscts \
|
|
modem defaultroute /dev/ttyS1 38400
|
|
</PRE>
|
|
|
|
<P> See man pppd if you want to know what's going on here. To connect to
|
|
the Internet, make sure that you're in your home directory and enter
|
|
|
|
<PRE>
|
|
source dialup
|
|
</PRE>
|
|
|
|
<P> (you'll have to su first). You should now be connected! Once you're
|
|
finished, just hit Ctrl-c to terminate the connection.
|
|
|
|
<P> This should be enough to connect to Freeserve from a stand-alone
|
|
terminal. I'm assuming that PPP is installed on your machine and that
|
|
your modem is connected to the second serial port (/dev/ttyS1, or COM2
|
|
under DOS).
|
|
|
|
<P> If this still doesn't work, look in /var/log/messages. That should tell
|
|
you why the connection failed.
|
|
|
|
<P> Good luck!
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">At-command error message
|
|
</FONT> </H3>
|
|
Mon, 01 Nov 1999 12:14:10 +0000
|
|
<BR>From: Buz Cory <<A HREF="mailto:helpdesk@buzco.penguinpowered.com">helpdesk@buzco.penguinpowered.com></A>
|
|
|
|
<P> On Tue, 28 Sep 1999 03:51:36 +0000, Ben <benvh@wish.net>
|
|
wrote regarding "AT-command error message ":
|
|
<BLOCKQUOTE>
|
|
Whenever I try to run "at" I get an error message, like so:
|
|
<PRE>
|
|
root@benzz:> at 10:15 command
|
|
Only UTC Timezone is supported. Last token seen: command
|
|
Garbled time
|
|
</PRE>
|
|
This is actual output. My system _is_ on UTC timezone,
|
|
</BLOCKQUOTE>
|
|
|
|
|
|
<P> I think that the reference to "UTC" in the error message is to the
|
|
command line, not what your system clock is running.
|
|
|
|
<P> AFAIK, at uses *local* time unless you specify "UTC", and seems not to
|
|
accept any other time zones. It seems in your example to be trying to
|
|
interpret "command" as a time zone.
|
|
|
|
<BLOCKQUOTE>
|
|
the at man-page didn't help a bit.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> I suggest that you read the man page again.
|
|
|
|
<P> If you don't know what "standard input" is, this could be the problem.
|
|
|
|
<P> From the man page:
|
|
"at and batch read commands from standard input or a specified file
|
|
which are to be executed at a later time, using /bin/sh."
|
|
|
|
<BLOCKQUOTE>
|
|
Someone suggested that I should write a file:
|
|
<PRE>
|
|
echo command> file at 10:15 cat < file
|
|
</PRE>
|
|
</BLOCKQUOTE>
|
|
|
|
<P> This is almost correct. Any of
|
|
<PRE>
|
|
echo command > file ; at 10:15 cat < file
|
|
echo command > file && at 10:15 cat < file
|
|
or
|
|
echo command > file
|
|
at 10:15 cat < file
|
|
</PRE>
|
|
would work. (These are two separate commands, and must be seen by the
|
|
shell as such).
|
|
|
|
<BLOCKQUOTE>
|
|
but that wouldn't help, as "at" is still in there, and it's "at"
|
|
making trouble.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Not exactly, it's misuse of "at" that is making the trouble.
|
|
|
|
<P> All "at" expects on its command line is the time and in your example it
|
|
is trying to interpret what follows the time as part of the time.
|
|
|
|
<P> The examples above avoid this, but they are kludgey.
|
|
|
|
<P> If you wish to run the *same* command from "at", then make it a shell
|
|
script and use the "-f" option, eg:
|
|
<PRE>
|
|
at -f my-script noon
|
|
</PRE>
|
|
or
|
|
<PRE>
|
|
at noon < my-script
|
|
</PRE>
|
|
|
|
<P> Otherwise, just use a pipe:
|
|
<PRE>
|
|
echo command | at noon
|
|
</PRE>
|
|
|
|
<P> Granted, this is non-intuitive, but it is the way "at" has worked for
|
|
over 20 yrs.
|
|
|
|
<BLOCKQUOTE>
|
|
Does anybody know what I'm doing wrong? Or just another way to
|
|
schedule tasks? I'm getting desperate now...
|
|
</BLOCKQUOTE>
|
|
|
|
<P> There is also another way to schedule tasks. "at" is for once-only
|
|
tasks. "cron" is for periodic tasks and works a whole different way.
|
|
|
|
<P> Hope this helps,<BR>
|
|
== Buz :)
|
|
|
|
|
|
|
|
|
|
<P><STRONG>From: Ben <<A HREF="mailto:benvh@wish.net">benvh@wish.net></A>:</STRONG>
|
|
|
|
<BLOCKQUOTE>
|
|
All "at" expects on its command line is the time and in your example it
|
|
is trying to interpret what follows the time as part of the time.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> This was the exact piece of information I was looking for. I didn't realize
|
|
"at" is interactive, and if anyone would have told me before, or if this
|
|
information was obvious from the man-page, I would have had my brain around the
|
|
concept of 'standard input' a lot sooner.
|
|
|
|
<P> Thanks again, Buz.
|
|
|
|
|
|
<H4>From: Buz:</H4>
|
|
|
|
|
|
<BLOCKQUOTE>
|
|
This was the exact piece of information I was looking for.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Good, but the following indicates you still don't quite get it.
|
|
|
|
<BLOCKQUOTE>
|
|
I didn't realize "at" is interactive,
|
|
</BLOCKQUOTE>
|
|
|
|
<P> It isn't, exactly, though it can be used that way. It is mostly
|
|
intended to be used as the end of a pipeline.
|
|
|
|
and if anyone would have told me before,
|
|
|
|
<BLOCKQUOTE>
|
|
<P> That's why I stuck in my 2 cents.
|
|
</BLOCKQUOTE>
|
|
|
|
<BLOCKQUOTE>
|
|
or if this information was obvious from the man-page,
|
|
</BLOCKQUOTE>
|
|
|
|
<P> It is (or should be), but only if you are already familiar with the
|
|
concept and workings of Standard Input.
|
|
|
|
<BLOCKQUOTE>
|
|
I would have had my brain around the concept of 'standard input' a lot
|
|
sooner.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> As I mentioned above, you still don't seem to grok it in fullness. It is
|
|
intimately related to concepts like "pipes", "pipelines", "filters", and
|
|
"redirection".
|
|
|
|
<P> M$-DOS had these concepts, to but they don't work as well there as in
|
|
Un*x, DOS not being multi-tasking. Hardly anyone used them or even knew
|
|
about them.
|
|
|
|
<P> Now that I think about it, have not seen a good discussion of these for
|
|
a long time. (10 yrs or more?). Seems I might have to write one, but
|
|
don't want to put it in the body of this mail.
|
|
|
|
<P> You might go to "UnixHelp for Users" at
|
|
<A HREF=http://unixhelp.ed.ac.uk/>unixhelp.ed.ac.uk</A>
|
|
(please use one of their many mirrors). This site provides the best intro
|
|
to using Un*x that I have seen online, but far from the best possible.
|
|
In particular, their glossary leaves much to be desired.
|
|
|
|
<P> Or the Unix Version 7 Manuals at
|
|
<A HREF=http://plan9.bell-labs.com/7thEdMan/index.html>
|
|
plan9.bell-labs.com/7thEdMan/index.html</A>.
|
|
This will take some work to make readable, but you will learn quite a
|
|
bit in just making it readable. The documents here were all written by
|
|
the *original* Unix gurus at AT&T about 1979. Not everything here is
|
|
still relevant, but most is. I plan to eventually have all this online
|
|
as HTML, but probably not till next year sometime.
|
|
|
|
<P> There are several HardCopy (book) resources available, but this email is
|
|
getting far too long.
|
|
|
|
<P> [...]
|
|
|
|
|
|
<P> You should try "man stdio" and then "man stdin" for a complete and
|
|
correct (if not terribly clear) description of the meaning and purpose
|
|
of "standard input", etc from the program's point of view.
|
|
This is written for "C" programmers, but most of it applies for any
|
|
language.
|
|
|
|
<P> I shall continue working on getting a <EM>good</EM>, <EM>clear</EM>
|
|
definition that is independent of OS and programming language.
|
|
|
|
<P> You might also try the section on "Text_IO" in the Ada definition, the
|
|
same concepts apply.
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Connecting a Linux PC to an ADSL modem
|
|
</FONT> </H3>
|
|
Mon, 1 Nov 1999 09:45:15 -0600
|
|
<BR>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>
|
|
|
|
<P> Take a look at some of the Firewall/Router/IPForwarding HOWTO's.
|
|
|
|
<P> Basically what you need is to connect one PC running Linux to the ADSL
|
|
connection, then connect the other PC's to an ethernet segment that also
|
|
includes the connected PC. Run IPChains/IPMasq on the connected station,
|
|
and you have a firewalled router that connects your private LAN to the
|
|
internet using seamless TCP/IP.
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Is SMP worth it?
|
|
</FONT> </H3>
|
|
Mon, 1 Nov 1999 09:39:03 -0600
|
|
<BR>From:
|
|
"Jonathan Hutchins" <<A HREF=mailto:hutchins@kc.net>hutchins@kc.net</A>>
|
|
|
|
<P> I haven't seen any benchmarks for Linux SMP, but generally you not only need
|
|
the SMP kernel, you need code that is optimized for the number of processors
|
|
you are running.
|
|
|
|
<P> The rule of thumb I know is from the NT universe, building and selling
|
|
servers, and that is that a second CPU results in about a 40% gain in
|
|
throughput. Be sure to compare the cost of a second CPU and the dual socket
|
|
motherboard against a 40% faster CPU (or maybe an Alpha?).
|
|
|
|
<P> You don't indicate how long these modeling sessions run, but if they're
|
|
reall clock hogs you might consider something like a Beowulf array using
|
|
less-than-state-of-the-art CPU's.
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Lexmark printer drivers, and Zoom modem
|
|
</FONT> </H3>
|
|
Mon, 1 Nov 1999 09:45:15 -0600
|
|
<BR>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>
|
|
|
|
<P> Don't know about your Zoom modem - presumably you know enough to avoid
|
|
Winmodems and Plug-and-Pray devices. Could be that something like a NIC is
|
|
grabbing the port - Linux brings up the NIC before the serial port, so where
|
|
in DOS you get a modem but the NIC fails, in Linux you get the NIC but no
|
|
modem.
|
|
|
|
<P> As far as your Lexmark goes, 1) Hassle IBM to provide drivers, and 2) Set it
|
|
to emulate an HP printer and use the driver for that.
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Linux classes
|
|
</FONT> </H3>
|
|
Mon, 1 Nov 1999 09:45:15 -0600
|
|
<BR>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>
|
|
|
|
<BLOCKQUOTE>
|
|
My question to all of you in the industry is this: What parts of Linux,
|
|
and the networking of same, are most important to you? Should there be
|
|
more concentration in TCP/IP fundamentals (which I have included),
|
|
specific Linux/*ix-based programs ( KDE, Gnome, Apache), or which? What
|
|
is it that you most desire in an entry-level (or not-so-entry-level)
|
|
employee candidate?
|
|
</BLOCKQUOTE>
|
|
<P> I think you should leave the TCP/IP stuff for a Networking class - it's
|
|
pretty independent of LINUX, and spending a lot of time on it would
|
|
shortchange the Linux specific material.
|
|
|
|
<P> I think there are two basic categories to Linux - First, setting a system
|
|
up, getting it running correctly and getting software installed for whatever
|
|
end-use is in mind. Second, ongoing administration - program updates,
|
|
troubleshooting, setting changes, maintaining things from routing tables to
|
|
firewall patches.
|
|
|
|
<P> I would look at the Microsoft "Installing and Configuring" classes for the
|
|
first level. Start with planning: hardware selection and compatibility,
|
|
selecting network topology and protocol, determining what services will run,
|
|
etc. Work with such indefinates as how to configure Xwindows for something
|
|
like the Asus SP97-V which isn't correctly supported by the install scripts.
|
|
Work on building install scripts for the various distribs like Linux and
|
|
Caldera that allow you to build your own. Mention common wierdnesses - like
|
|
the fact that Linux brings up Network cards first, then serial ports, which
|
|
is the opposite of DOS and means that in a conflict it will be the serial
|
|
port instead of the NIC that fails.
|
|
|
|
<P> Ongoing admin can be anything from finding module and library dependencies
|
|
to compiling custom kernels. How to keep the patches and updates current
|
|
without scrambling the system with multiple installations of common
|
|
libraries. Strategies for testing updates before rolling them out to
|
|
production.
|
|
|
|
<P> The first class would be most of what someone would need to maintain a
|
|
single-user workstation or a home router/server. Some topics wold cross
|
|
over - installing and updating new Xwindows software would be of concern to
|
|
the person setting up a new system and adding productivity software, to the
|
|
individual maintaining a single-user workstation, and to the system
|
|
administrator rolling out a new WordPerfect to a 100 user office. Probably
|
|
the basics would be covered in the first class, and the strategies for a
|
|
large rollout in the second.
|
|
|
|
<P> Anyway, there's what I think. Let us know what you end up with.
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Diamond A50
|
|
</FONT> </H3>
|
|
Fri, 19 Nov 1999 17:19:13 -0500
|
|
<BR>From: Anthony J Placilla <<A HREF="mailto:anthony_placilla@suth.com">anthony_placilla@suth.com></A>
|
|
|
|
<P> The Diamond A50 will work with a little configuration. You need to
|
|
modify /etc/X11/XF86Config.
|
|
Go to the "Graphics Device" section. You'll see a stanza that starts
|
|
with " Device configured by Xconfigurator"
|
|
Underneath the "Boardname" line add the following 3 line:
|
|
|
|
<PRE>
|
|
option "no_bitblt"
|
|
option "no_imageblt"
|
|
option "sw_cursor"
|
|
</PRE>
|
|
|
|
<P> the video ram line will probably be commented. Remove the # in front of
|
|
it, save & exit the file.
|
|
|
|
<PRE>
|
|
startx
|
|
</PRE>
|
|
|
|
<P> Have fun
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Telnet Trouble
|
|
</FONT> </H3>
|
|
04 Nov 1999 14:03:58 -0600
|
|
<BR>From: Omegaman <<A HREF="mailto:scotth@fastband.com">scotth@fastband.com></A>
|
|
|
|
|
|
<P> Jim,
|
|
The user shouldn't need to disable TCP wrappers. I have left both
|
|
messages in full for my explanation.
|
|
|
|
<P> --Sat, 25 Sep 1999 01:28:37 -0700
|
|
From: Jim Dennis (jimd@starshine.org)
|
|
|
|
<P> Dear Jim
|
|
|
|
<BLOCKQUOTE>
|
|
<BLOCKQUOTE>
|
|
Your email did help me to solve the problem with the telnet in
|
|
linux. It works fine now. Thanks a million.....
|
|
|
|
I have a small doubt. Let me explain...... My network has a NT
|
|
server, LINUX server and 20 windows 95 clients. I followed your
|
|
instructions and added the address of all the clients into the
|
|
/etc/hosts file on the LINUX machine and voila the telnet worked
|
|
immediately.
|
|
|
|
But the NT server was the one who was running a DHCP server and
|
|
dynamically allocating the addresses to the clients. The clients
|
|
were configured to use DHCP and were not statically given and ip
|
|
addresses. I managed to see the current DHCP allocation for each
|
|
client and add those address into the /etc/hosts file on the LINUX
|
|
server but my doubt is what happens when the DHCP address for the
|
|
client changes? Then again we'll have to change the address in the
|
|
/etc/hosts file right? This seems silly. Is there anyway to make the
|
|
LINUX hosts file to automatically pick up the DHCP address from the
|
|
NT server?
|
|
|
|
Also another important thing is I am still unable to ping from the
|
|
NT server to the LINUX server using the name. It works only with the
|
|
IP address. Is there any way to make the NT DHCP to recognize the
|
|
LINUX server?
|
|
</BLOCKQUOTE>
|
|
|
|
Well, either you shouldn't use dynamic addressing (DHCP) or you
|
|
should use dynamic DNS. You could also disable TCP Wrappers (edit
|
|
your /etc/inetd.conf to change lines like:
|
|
|
|
<PRE>
|
|
telnet stream tcp nowait root/usr/sbin/tcpd in.telnetd
|
|
</PRE>
|
|
|
|
... to look more like:
|
|
|
|
<PRE>
|
|
telnet stream tcp nowait root/usr/sbin/in.telnetd in.telnetd
|
|
</PRE>
|
|
|
|
</BLOCKQUOTE>
|
|
|
|
<P> There's no need to do this. hosts.allow and hosts.deny allow
|
|
network/netmask specifications. So lets say our user's DHCP assigns
|
|
from the simple class C 192.168.0.1 - 192.168.0.255. In hosts.allow we
|
|
can then put:
|
|
|
|
<PRE>
|
|
in.telnetd: 192.168.0.
|
|
</PRE>
|
|
|
|
<P> -- OR --
|
|
|
|
<PRE>
|
|
in.telnetd: 192.168.0.0/255.255.255.0
|
|
</PRE>
|
|
|
|
<P> you can also allow/deny based on host or domain name:
|
|
|
|
<P> in.telnetd: .domain.com
|
|
|
|
|
|
<P> Then you won't need mappings in /etc/hosts for the current DHCP
|
|
assigned address. You may want to do dynamic DNS if you need the
|
|
hostnames of the windows workstations. Then point the linux box's
|
|
resolv.conf at your NT server with the DNS mappings. Or, better
|
|
still, make the linux box your DHCP server/DNS server and use BIND 8's
|
|
dynamic DNS features.
|
|
|
|
<P> Windows also has a HOSTS file with a format identical to /etc/hosts in
|
|
the windows or winnt directory. You'll find the entry for localhost
|
|
already in it. You can add the linux box's IP there for name
|
|
resolution.
|
|
|
|
<BLOCKQUOTE>
|
|
(and comment out all of the services you don't need while you're at
|
|
it).
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Definitely a good idea.
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">DHCP and Dynamic DNS
|
|
</FONT> </H3>
|
|
Thu, 4 Nov 1999 15:17:38 -0600
|
|
<BR>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>
|
|
|
|
<P> Jim Dennis says:
|
|
|
|
<P> "But the NT server was the one who was running a DHCP server and dynamically
|
|
allocating the addresses to the clients. The clients were configured to use
|
|
DHCP and were not statically given and ip addresses. I managed to see the
|
|
current DHCP allocation for each client and add those address into the
|
|
/etc/hosts file on the LINUX server but my doubt is what happens when the
|
|
DHCP address for the client changes? Then again we'll have to change the
|
|
address in the /etc/hosts file right? This seems silly. Is there anyway to
|
|
make the LINUX hosts file to automatically pick up the DHCP address from the
|
|
NT server?
|
|
|
|
<P> Also another important thing is I am still unable to ping from the NT server
|
|
to the LINUX server using the name. It works only with the IP address. Is
|
|
there any way to make the NT DHCP to recognize the LINUX server? "
|
|
|
|
|
|
|
|
<P> Microsoft's answer to this problem is to run the Windows Internet Name
|
|
Service - WINS. This provides NetBIOS name resolution to dynamic addresses
|
|
as assigned by WindowsNT DHCP. The WindowsNT DNS system will also allow you
|
|
to provide Internet Name resolution for dynamic addresses. Since you're
|
|
mostly running WIndows95 clients, these clients can be pointed to the WINS
|
|
server via the variables on the DHCP server, and will be able to resove
|
|
addresses for TELNET and other services. (Be sure to take advantage of the
|
|
WINS node-type configuration in DHCP too - it reduces broadcast traffic for
|
|
name resolution.) If you need non-Windows applications or clients to
|
|
resolve names, you'll need the DNS system as well.
|
|
|
|
<P> Another solution is to go into the DHCP configuration and make each IP
|
|
Address assignment a "reserved" address - reserved for the MAC address of a
|
|
given machine. That way, you have the advantages of centralised
|
|
administration of Internet paramaters such as Gateway and DNS servers
|
|
without having the IP addresses change unless you tell them to.
|
|
|
|
<P> Finally, the Microsoft implementation of the LMHOSTS and HOSTS files allows
|
|
using an "INCLUDE" statement to link to a central address file (on the
|
|
server, for instance). This lets you use these files instead of WINS and
|
|
DNS (respectively), but maintain the tables in a single, central file.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">i740 AGP
|
|
</FONT> </H3>
|
|
Thu, 4 Nov 1999 15:08:46 -0500 (EST)
|
|
<BR>From: Gleef <<A HREF="mailto:gleef@capital.net">gleef@capital.net></A>
|
|
|
|
|
|
<P> Hakon Andersson wrote:
|
|
<BLOCKQUOTE>
|
|
I wish to run my i740 AGP under Linux. I am a Linux newbie though. I was
|
|
wondering if you could tell me, or direct me onto some resources on how
|
|
to setup my i740, or which server to install during installation. I am
|
|
installing Redhat5
|
|
|
|
</BLOCKQUOTE>
|
|
<P> I currently have an i740 AGP system running under Linux. The problem is
|
|
that, back when Red Hat version 5 came out, Intel was refusing to release
|
|
information about that video chipset. There was a binary-only X Server,
|
|
but it was poor. Since then, Intel apparently opened up its NDA (with
|
|
Red Hat's urging, if I recall), and the source code for that X Server was
|
|
released. Since then, the source code has been cleaned up, and
|
|
incorporated into the standard SVGA server for XFree86.
|
|
|
|
<P> The i740 works very well with the XFree86 SVGA server, but only in
|
|
versions 3.3.4 and later. Red Hat 5 has a much earlier version, but it
|
|
probably can be upgraded with a little effort. You're probably better off
|
|
just using a more recent distribution, such as Red Hat 6.1.
|
|
|
|
<P> Best of Luck,
|
|
-Gleef
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">3-button mouse on X Window System
|
|
</FONT> </H3>
|
|
Thu, 4 Nov 1999 21:27:38 -0600
|
|
<BR>From: Alan Wormser <<A HREF="mailto:n5lf@qsl.net">n5lf@qsl.net></A>
|
|
|
|
<P> Angelo:
|
|
|
|
<P> I use Red Hat 5.1, so your subdirectories may be a little different, but
|
|
here is a solution:
|
|
|
|
<P> 1. Log in as "root" so you can modify the configuration files for XWindows.
|
|
(As an alternative, you could log in as a regular user and use the "su"
|
|
command to get root access.)
|
|
|
|
<P> 2. Edit the file called "XF86Config" in the "/etc/X11" directory. This is
|
|
a regular text file that has all your X settings for mouse, keyboard,
|
|
monitor, and video card.
|
|
|
|
<P> 3. Find the "Pointer Section" which is about on line 125 (out of 383 lines
|
|
in my copy of the file).
|
|
|
|
<P> 4. Find the line that says, "# Emulate3Buttons", and remove the "#" sign.
|
|
The "#" indicates a comment and removing it turns the comment into a
|
|
command.
|
|
|
|
<P> 5. Save and exit and log back in as a regular user (never play around as
|
|
"root" -- it's too dangerous).
|
|
|
|
<P> I think that will fix xstart for you! Good luck!
|
|
|
|
<P> Alan Wormser
|
|
Austin, TX
|
|
|
|
|
|
<H4>From: <<A HREF="mailto:rsmith@xs4all.nl">rsmith@xs4all.nl></A>:</H4>
|
|
|
|
<P> Dear Angelo,
|
|
|
|
<P> In Linux Gazette nr. 47, you write:
|
|
|
|
<BLOCKQUOTE>
|
|
Can anybody help me with this simple (I guess) problem? My three-button
|
|
mouse works very fine on the console, but it doesn't when I "startx".
|
|
What's going on? How can I solve this problem and start using the
|
|
middle mouse button under X? Any suggestion will be appreciated.
|
|
</BLOCKQUOTE>
|
|
<P> What's going on is that your gpm (console mouse daemon) is probably set
|
|
up differently from ths X Window System.
|
|
|
|
<P> Look for the file XF86Config (probably in /etc/X11/)
|
|
|
|
<P> Look for the "Pointer" section, and change the protocol from Microsoft
|
|
to MouseSystems, as shown below:
|
|
|
|
<PRE>
|
|
Section "Pointer"
|
|
# Protocol "Microsoft"
|
|
Protocol "MouseSystems"
|
|
Device "/dev/mouse"
|
|
EndSection
|
|
</PRE>
|
|
|
|
<P> That should do the trick.
|
|
|
|
|
|
|
|
|
|
<H4>From: Gerard Beekmans <<A HREF="mailto:glb@dds.nl">glb@dds.nl></A>:</H4>
|
|
|
|
From: angico@yahoo.com:
|
|
<BLOCKQUOTE>
|
|
<P> Can anybody help me with this simple (I guess) problem? My three-button
|
|
mouse works very fine on the console, but it
|
|
doesn't when I "startx". What's going on? How can I solve this problem
|
|
and start using the middle mouse button under X?
|
|
Any suggestion will be appreciated.
|
|
|
|
</BLOCKQUOTE>
|
|
<P> Start by opening your XF86Config file. It's under one of these places
|
|
(under normal circumstances):<BR>
|
|
/etc/XF86Config<BR>
|
|
<XRoot>/lib/X11/XF86Config.hostname<BR>
|
|
<XRoot>/lib/X11/XF86Config<BR>
|
|
|
|
<P> Look for the section "Pointer"
|
|
|
|
<P> See if you have these (similair) lines:<BR>
|
|
Emulate3Buttons<BR>
|
|
Emulate3Timeout 50<BR>
|
|
|
|
<P> If you have them, comment them out (by putting #'s in front of them)
|
|
If you don't have them, you can try adding them.
|
|
|
|
<P> Exit X and restart it (and cross your fingers ;)
|
|
|
|
<P> If this doesn't work, could you tell me what kind of mouse (brand and
|
|
connection like serial mouse or ps/2 mouse) you're using?
|
|
And can you send me your XF86Config file too.
|
|
|
|
|
|
<H4>From: Joachim Noffke <<A HREF="mailto:Joachim.Noffke@t-online.de">Joachim.Noffke@t-online.de></A>:</H4>
|
|
|
|
<P> The mouse configurations for the console and for X are independent from
|
|
each other. You probably have configured X with a different mouse type
|
|
that doesn't support three buttons. If your mouse works on the text
|
|
console, try using the same settings for X.
|
|
|
|
<P> To do this, check your "gpm" command in /etc/rc.d/rc.local (for
|
|
Slackware, filename may vary depending on your distribution) to find out
|
|
which mouse type is being used there (argument "-t"). Reconfigure the
|
|
mouse under X accordingly (i.e. rerun XF86Setup, xf86config, or whatever
|
|
you're using).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Dual PIII Xeon performance
|
|
</FONT> </H3>
|
|
Sat, 6 Nov 1999 16:00:01 +0100 (CET)
|
|
<BR>From: <<A HREF="mailto:rsmith@xs4all.nl">rsmith@xs4all.nl></A>
|
|
|
|
<P> Dear Nick,
|
|
|
|
<P> In issue 47 of the Linux Gazette, you wrote
|
|
|
|
<BLOCKQUOTE>
|
|
<P> I do some intensive (multi-week runs) ocean modeling on my Dell 610 w/
|
|
a PIII 500 Mhz Xeon. I am having a hard time finding out whether a
|
|
second PIII will improve the speed of a single process, or only for
|
|
multi-processes. Either way would help, but it would be nice to know
|
|
before laying out the $.
|
|
|
|
</BLOCKQUOTE>
|
|
<P> A second processor cannot really enhance the speed of a single process,
|
|
other than distributing all the processes on your PC over two
|
|
processsors. Remember that Linux is a multiuser/multitasking systems.
|
|
At any time several processes are waiting for processor time.
|
|
|
|
<P> If your application is capable of running multiple instances of itself,
|
|
working together on the same data-set, you would see the largest speed
|
|
increase.
|
|
|
|
<P> Remember that you need a kernel compiled for SMP to be able to use 5the
|
|
second processor. AFAIK, an SMP-able kernel doesn't work with a single
|
|
processor.
|
|
|
|
<P> Other things you could try to make your process run faster are:
|
|
<UL>
|
|
<LI> killing unnecessary daemons (e.g. inetd, sendmail and lpd) when you
|
|
don't need them.
|
|
<LI> give the process a higher priority (negative nice value) using
|
|
"nice". Mind you, the superuser has to do this.
|
|
</UL>
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">epson 800 printer driver
|
|
</FONT> </H3>
|
|
Sat, 6 Nov 1999 16:16:52 +0100 (CET)
|
|
<BR>From: <<A HREF="mailto:rsmith@xs4all.nl">rsmith@xs4all.nl></A>
|
|
|
|
<P> Dear Linda,
|
|
|
|
<P> In the Linux Gazette nr. 47, you wrote:
|
|
|
|
<BLOCKQUOTE>
|
|
We need to install above and need a driver installer disk, can you
|
|
help. e:mail us or please call 01752 788099, we are desperate.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Linux doesn't have printer drivers as such. Printing services aren't
|
|
part of the Linux kernel.
|
|
|
|
<P> Most Linux users use Ghostscript (a postscript interpreter) as a way to
|
|
use their printer as a postscript printer. The Epson Stylus 800 is
|
|
supported by Ghostscript 5.5. Most modern distributions have this.
|
|
|
|
<P> Install Ghostscript, adapt your /etc/printcap so that all programs that
|
|
print via the printing daemon can access them.
|
|
|
|
<P> Read the Printing-HOWTO.
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">KDE slower than windoze?
|
|
</FONT> </H3>
|
|
Sat, 6 Nov 1999 16:23:21 +0100 (CET)
|
|
<BR>From: <<A HREF="mailto:rsmith@xs4all.nl">rsmith@xs4all.nl></A>
|
|
|
|
<P> Dear Sandra,
|
|
|
|
<P> In Linux Gazette nr. 47 you wrote:
|
|
|
|
<BLOCKQUOTE>
|
|
I've just installed linux on my Acer Notebook 370 and I thought
|
|
everthing works fine. But when I'm running KDE it takes e.g. about 5
|
|
minutes to open Netscape!!! Is anybody out there who knows what's wrong
|
|
with my installation???
|
|
</BLOCKQUOTE>
|
|
<P> How much memory does your notebook have? I'd say you would need at
|
|
least 16 MB to get a somewhat usable X environment, but 32 or 64 MB
|
|
would be better. It sounds like your system is swapping a lot to get
|
|
Netscape to load.
|
|
|
|
<P> I would recommend you switch from KDE to a less memory intensive Window
|
|
Manager (try fvwm1). Netscape itself is also quite big, although older
|
|
versions (3.x) are smaller then new ones.
|
|
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">My Windows partition hasd full access for root only
|
|
</FONT> </H3>
|
|
Sat, 6 Nov 1999 14:34:00 -0500
|
|
<BR>From: Gerard Beekmans <<A HREF="mailto:glb@dds.nl">glb@dds.nl></A>
|
|
|
|
<BLOCKQUOTE>
|
|
<P> I have 2 questions:
|
|
|
|
I have partitioned my HD in 4 partitions.
|
|
|
|
1.1 - Win98 (Filesystem is FAT-Win95) <BR>
|
|
2.Linux Swap <BR>
|
|
3.Linux OS <BR>
|
|
4.Personal Data (Filesystem is FAT-Win95) <BR>
|
|
|
|
Questions 1.<BR>
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Both the FAT-Win95 Filesystem Partitoins get mounted properly in Linux
|
|
but the problem is that only root has
|
|
read/write/execute permission. The other users only have read/execute
|
|
permissions.How can I have it set up so that
|
|
everyone had r/w/x permission to the mounted filesystems (and all the
|
|
subdirectories within them)
|
|
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Here's a solution. When you mount the partition, use this command:
|
|
<PRE>
|
|
mount -t vfat -o umask=000 partition mountpoint
|
|
</PRE>
|
|
|
|
<P> You might use a slightly differnet command (aside the -o umask=000
|
|
option). The thing is: you need to put -o umask=000 somewhere. This
|
|
command makes all files/directories mode 777 (r/w/x) for everybody
|
|
(owner, group and other).
|
|
|
|
<P> This doesn't add attributes which aren't originally present. Normally
|
|
when root mounts, the write-attribute is removed from every file when
|
|
you mount it (since root has usually umask 022 - group and other don't
|
|
get write permissions when new files are created. If you use umask in a
|
|
mount command every file that is on that filesystem will be treated like
|
|
it has just been created (to put it simple)). If a file is marked
|
|
read-only by Windows, the mount program will see that and will treat it
|
|
like that aswell. Therefore you can't write to files that are already
|
|
read-only, unless you're root.
|
|
|
|
|
|
<BLOCKQUOTE>
|
|
<P> Question 2.<BR>
|
|
If I access any file from the FAT-WIN95 filesystem and make a change to
|
|
it within Linux, when I boot in windows, that file is
|
|
marked as "read only". Any idea why this is happening and how I can stop
|
|
this from happening?
|
|
|
|
</BLOCKQUOTE>
|
|
<P> I've never seen this happen on my system. I usually don't even use the
|
|
umask=000 setting (since i hardly access the win95 partition at all. If i have
|
|
to do it, i just do it as root). My only guess is that your root's umask
|
|
has the first digit set to 2. If you type 'umask' at your prompt you
|
|
should see '022'. But I don't think this is the case here. Check it
|
|
anyway just to be sure :)
|
|
|
|
<P> Perhaps this umask=000 setting answers your 2nd question. Again, since
|
|
it doesn't happen here I can't test it either i'm afraid.
|
|
|
|
<BLOCKQUOTE>
|
|
<P> Maybe the two are related. Any help will be greatly appreciated.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> You're most welcome. Hope all goes well. If you have more questions,
|
|
feel free to ask ;)
|
|
|
|
|
|
<H4>From: Joachim Noffke <<A HREF="mailto:Joachim.Noffke@t-online.de">Joachim.Noffke@t-online.de></A>:</H4>
|
|
|
|
<P> If your FAT partitions are mounted automatically at boot time, all files
|
|
on them will belong to root. To change the permissions for other users,
|
|
edit your /etc/fstab file: in the two lines corresponding to your FAT
|
|
partitions (the ones which contain "vfat" or "msdos" in the third
|
|
column), add the mount option "umask=0" to the fourth column. This
|
|
should solve at least problem #1.
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Tryin' to install a Diamond SupraExpress 56i V PRO
|
|
</FONT> </H3>
|
|
Sat, 6 Nov 1999 14:35:06 -0500
|
|
<BR>From: Gerard Beekmans <<A HREF="mailto:glb@dds.nl">glb@dds.nl></A>
|
|
|
|
<BLOCKQUOTE>
|
|
<P> I have a problem with my new modem. I tried to install it under Red-Hat
|
|
5.2 but it doesn't work. My modem is an internal
|
|
Diamond Supra Express 56i V PRO and under W98 the default configuration
|
|
is irq 12 an I/O port 0x3e8. Under W98 it works
|
|
perfectly and i don't think this is a "winmodem"(isn't it?). Windows
|
|
"says" that under DOS it must be configured with: COM 3,
|
|
irq 4 and I/O port 0x3e8 (/dev/ttyS2 isn't it?)
|
|
|
|
I just want to know if this is a winModem or not and how can I install
|
|
it.
|
|
|
|
</BLOCKQUOTE>
|
|
<P> First we have to make sure wether it's a winmodem or not.
|
|
|
|
<P> How do you configure the modem? Do you need to change jumpers on the
|
|
modemcard itself to change IRQ's and the like? If so, then chances are
|
|
high that it is not a winmodem.
|
|
|
|
<P> Here's a second check.
|
|
|
|
<P> When you boot the computer, you get the BIOS tests output. It also
|
|
contains a list with comports it had found. If that lists the comport
|
|
of your modem, then you are sure that your modem is not a winmodem.
|
|
|
|
<P> I advise to put your modem on COM4 (IRQ3 I/O 2E8) since that works best
|
|
and in case you have a serial mouse it won't interfere with it (if you
|
|
have a serial mouse on COM1 and a modem on COM3, they both have the same
|
|
IRQ and that is a possible problem hazard). If you, however, have a PS/2
|
|
mouse, then you can safely leave it on com3.
|
|
|
|
<P> And yes, COM3 is /dev/ttyS2 under Linux.
|
|
|
|
<P> Have you tried minicom under Linux? It's a program similair to
|
|
Hyperterminal from Windows. You can use the program to send AT-commands
|
|
(modem commands) to a serial port and in that way you can determine if
|
|
the modem is responding or not.
|
|
|
|
<P> Good luck.
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Linneighbourhood
|
|
</FONT> </H3>
|
|
Thu, 11 Nov 1999 01:25:12 +0530 (IST)
|
|
<BR>From: Raj <<A HREF="mailto:s_raj@flashmail.com">s_raj@flashmail.com></A>
|
|
|
|
|
|
|
|
<P> this is the rpm info extracted with the rpm -qip command
|
|
|
|
<PRE>
|
|
Name : gnomba Relocations: (not relocateable)
|
|
Version : 0.3 Vendor: (none)
|
|
Release : 1 Build Date: Thu Jul 2911:10:45 1999
|
|
Install date: (not installed) Build Host:otherland.darkcorner.net
|
|
Group : Utilities/Network Source RPM:gnomba-0.3-1.src.rpm
|
|
Size : 64461 License: GPL
|
|
Summary : Gnome Samba Browser
|
|
Description :
|
|
gnomba is a GUI network browser using the smb protocol. It allows users
|
|
to browse workgroups, machines, and shares in a "Network Neighborhood."
|
|
</PRE>
|
|
|
|
<P> i havn't installed this nor tested this
|
|
|
|
<P> if you find time pl send me the comments about this rpm
|
|
|
|
<P> raj
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">Compiling your own Linux distro.
|
|
</FONT> </H3>
|
|
Fri, 12 Nov 1999 21:04:49 +0200
|
|
<BR>From: Willem Brown <<A HREF="mailto:willem@brwn.org">willem@brwn.org></A>
|
|
|
|
<P> Hi,
|
|
|
|
<P> I recently came across this on the web.
|
|
|
|
<P> The ROCK Linux Homepage: <A HREF=http://linux.rock-projects.com/>
|
|
linux.rock-projects.com</A>
|
|
|
|
<P> ----- snip README ------
|
|
|
|
<P> ROCK Linux is built by a few shell scripts. These scripts can download
|
|
all necessary sourcecode from the internet, compile the packages with
|
|
optimizations for your choice of processor, build the package files
|
|
and (optionally) create a CD-ROM image.
|
|
|
|
<P> ROCK Linux is a small distribution, but it's not a "mini distribution".
|
|
It comes with over 200 packages including X11 and the GNOME Desktop.
|
|
|
|
<P> ----- snip README ------
|
|
|
|
<P> These scripts is about 1.3MB in size.
|
|
|
|
<P> HTH
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">SiS
|
|
</FONT> </H3>
|
|
Sun, 21 Nov 1999 21:04:48 -0600
|
|
<BR>From: Alton W. Jones <<A HREF="mailto:wljones@hex.net">wljones@hex.net></A>
|
|
|
|
<P> Your November column had some advice for a newbie struggling with an SiS
|
|
video assembly. I offer the folowing:
|
|
|
|
<P> For S.u.S.E.
|
|
Go to their site http://www.suse.com/ for drivers. I did this with
|
|
S.u.S.E. Linux 6.1. The drivers work, but can be installed only with
|
|
S.u.S.E. SaX. The other installation programs will not work. The
|
|
XF86Config file written is NOT compatible with xf86config, but is
|
|
required to get SiS up. My SiS 530 on-board setup is limited to 16-bit
|
|
color depth. Windows on the same computer has 32-bit color depth.
|
|
|
|
<P> For Red Hat 6.0, Open Linux 2.0, and Slackware 3.6
|
|
There are drivers at http://www.sis.com.tw/. There are also
|
|
instructions. I have not tried them, so you are on your own. Have fun.
|
|
|
|
<P> Regards,
|
|
William L. Jones, P.E.
|
|
wljones@hex.net
|
|
|
|
|
|
|
|
|
|
<P> <hr> <P>
|
|
<!--================================================================-->
|
|
<a name=""></a>
|
|
<H3><IMG ALIGN=BOTTOM ALT="" SRC="../gx/lil2cent.gif">
|
|
ANSWER: <FONT COLOR="navy">RedHat Business Model
|
|
</FONT> </H3>
|
|
Mon, 1 Nov 1999 09:47:25 -0600
|
|
<BR>From: Jonathan Hutchins <<A HREF="mailto:hutchins@kc.net">hutchins@kc.net></A>
|
|
|
|
<BLOCKQUOTE>
|
|
One part of my research is where I am analysing the business model of
|
|
Linux (from Redhat) . However I fear by going to Redhat's website the
|
|
information about it's product may be biased and I may not be able to
|
|
get an all rounded opinion.
|
|
</BLOCKQUOTE>
|
|
|
|
<P> Get your basic info from RedHat, state your thesis on line (newsgroups?) and
|
|
ask people to refute it. RedHat's pretty above-board, and most people don't
|
|
have too much argument about their policies.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<!-- END tips.answers -->
|
|
|
|
|
|
|
|
<!-- *** BEGIN copyright *** -->
|
|
<P> <hr> <P>
|
|
<H5 ALIGN=center>
|
|
This page written and maintained by the Editor of the <I>Linux Gazette</I>.<BR>
|
|
Copyright © 1999, <A HREF="mailto:gazette@ssc.com">gazette@ssc.com</A><BR>
|
|
Published in Issue 48 of <i>Linux Gazette</i>, December 1999</H5>
|
|
<!-- *** END copyright *** -->
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