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gferg 2005-10-13 12:31:06 +00:00
parent cd7af44b21
commit 5fc56c0188
4 changed files with 181 additions and 143 deletions
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2
LDP/howto/docbook/HOWTO-INDEX/adminSect.sgml
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@ -347,7 +347,7 @@ in-file system compression. </Para>
TimePrecision-HOWTO</ULink>,
<CiteTitle>Managing Accurate Date and Time HOWTO</CiteTitle>
</Para><Para>
<CiteTitle>Updated: May 2005</CiteTitle>.
<CiteTitle>Updated: Oct 2005</CiteTitle>.
Explains the time mechanisms on Linux, what are time zones, and
precision with NTP. </Para>
</ListItem>

2
LDP/howto/docbook/HOWTO-INDEX/howtoChap.sgml
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@ -4759,7 +4759,7 @@ How to turn inexpensive legacy computers into fast terminals. </Para>
TimePrecision-HOWTO</ULink>,
<CiteTitle>Managing Accurate Date and Time HOWTO</CiteTitle>
</Para><Para>
<CiteTitle>Updated: May 2005</CiteTitle>.
<CiteTitle>Updated: Oct 2005</CiteTitle>.
Explains the time mechanisms on Linux, what are time zones, and
precision with NTP. </Para>
</ListItem>

147
LDP/howto/docbook/TimePrecision-HOWTO/Brazil.txt Normal file
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@ -0,0 +1,147 @@
# Brazil Time Zones
#
# Brazilian Time Zones are:
# BREST: East of Brasilia. Fernando de Noronha.
# BRST: Brasilia, São Paulo, Rio, Northeast, South etc
# BRWST: West of Brasilia. Mato Grosso, Manaus
# BRAST: Acre.
#
# In daylight saving time, letter 'S' changes to 'D'.
# All the brazilian daylight changes can be found here:
# http://pcdsh01.on.br/
# http://pcdsh01.on.br/verao1.html
#
# To install, make:
#
# # zic Brazil.txt
#
# Zone files will be installed in /usr/share/zoneinfo (depends on your
# distribution). Then, make a symbolic link from your zone to /etc/localtime:
#
# # cd /etc; ln -sf /usr/share/zoneinfo/Brazil/Brasilia localtime
#
#
# If you have updates and new standards to this file please send to
# Avi Alkalay (avi @ unix.sh)
# Fred Neves (fneves @ registro.br)
#
# Last update: 12 Oct 2005
#
#
# This file is available at
#
# http://avi.alkalay.net/software/zoneinfo/
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Brazil 1931 1932 - Oct 3 00:00 1:00 D
Rule Brazil 1932 1933 - Mar 31 00:00 0 S
Rule Brazil 1949 only - Dec 1 00:00 1:00 D
Rule Brazil 1950 only - Apr 30 00:00 0 S
Rule Brazil 1950 1952 - Dec 1 00:00 1:00 D
Rule Brazil 1951 only - Apr 16 00:00 0 S
Rule Brazil 1952 only - Mar 31 00:00 0 S
Rule Brazil 1953 only - Feb 28 00:00 0 S
Rule Brazil 1963 only - Oct 23 00:00 1:00 D
Rule Brazil 1964 only - Mar 1 00:00 0 S
Rule Brazil 1965 only - Jan 31 00:00 1:00 D
Rule Brazil 1965 only - Mar 31 00:00 0 S
Rule Brazil 1965 only - Dec 1 00:00 1:00 D
Rule Brazil 1966 1968 - Mar 1 00:00 0 S
Rule Brazil 1966 1967 - Nov 1 00:00 1:00 D
Rule Brazil 1984 only - Nov 2 00:00 1:00 D
Rule Brazil 1985 only - Mar 15 00:00 0 S
Rule Brazil 1985 only - Nov 2 00:00 1:00 D
Rule Brazil 1986 only - Mar 15 00:00 0 S
Rule Brazil 1986 only - Oct 25 00:00 1:00 D
Rule Brazil 1987 only - Feb 14 00:00 0 S
Rule Brazil 1987 only - Oct 25 00:00 1:00 D
Rule Brazil 1988 only - Feb 7 00:00 0 S
Rule Brazil 1988 only - Oct 16 00:00 1:00 D
Rule Brazil 1989 only - Jan 29 00:00 0 S
Rule Brazil 1989 only - Oct 15 00:00 1:00 D
Rule Brazil 1990 only - Feb 11 00:00 0 S
Rule Brazil 1990 only - Oct 21 00:00 1:00 D
Rule Brazil 1991 only - Feb 17 00:00 0 S
Rule Brazil 1991 only - Oct 20 00:00 1:00 D
Rule Brazil 1992 only - Feb 9 00:00 0 S
Rule Brazil 1992 only - Oct 25 00:00 1:00 D
Rule Brazil 1993 only - Jan 31 00:00 0 S
Rule Brazil 1993 only - Oct 17 00:00 1:00 D
Rule Brazil 1994 only - Feb 20 00:00 0 S
Rule Brazil 1994 only - Oct 16 00:00 1:00 D
Rule Brazil 1995 only - Feb 19 00:00 0 S
Rule Brazil 1995 only - Oct 15 00:00 1:00 D
Rule Brazil 1996 only - Feb 11 00:00 0 S
Rule Brazil 1996 only - Oct 06 00:00 1:00 D
Rule Brazil 1997 only - Feb 16 00:00 0 S
Rule Brazil 1997 only - Oct 06 00:00 1:00 D
Rule Brazil 1998 only - Mar 01 00:00 0 S
Rule Brazil 1998 only - Oct 11 00:00 1:00 D
Rule Brazil 1999 only - Feb 21 00:00 0 S
Rule Brazil 1999 only - Oct 3 00:00 1:00 D
Rule Brazil 2000 only - Feb 27 00:00 0 S
Rule Brazil 2000 only - Oct 8 00:00 1:00 D
Rule Brazil 2001 only - Feb 18 00:00 0 S
Rule Brazil 2001 only - Oct 14 00:00 1:00 D
Rule Brazil 2002 only - Feb 17 00:00 0 S
Rule Brazil 2002 only - Nov 3 00:00 1:00 D
Rule Brazil 2003 only - Feb 16 00:00 0 S
Rule Brazil 2003 only - Oct 19 00:00 1 D
Rule Brazil 2004 only - Feb 15 00:00 0 S
Rule Brazil 2004 only - Nov 2 00:00 1 D
Rule Brazil 2005 only - Feb 20 00:00 0 S
Rule Brazil 2005 only - Oct 16 00:00 1 D
Rule Brazil 2006 only - Feb 19 00:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone posix/Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone right/Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone America/Sao_Paulo -3:00 Brazil BR%sT
Zone America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone America/Brasilia -3:00 Brazil BR%sT
Zone posix/America/Sao_Paulo -3:00 Brazil BR%sT
Zone posix/America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone posix/America/Salvador -3:00 Brazil BR%sT
Zone posix/America/Brasilia -3:00 Brazil BR%sT
Zone posix/Brazil/Central -3:00 Brazil BR%sT
Zone posix/Brazil/Brasilia -3:00 Brazil BR%sT
Zone posix/Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone posix/Brazil/Salvador -3:00 Brazil BR%sT
Zone posix/Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone right/America/Sao_Paulo -3:00 Brazil BR%sT
Zone right/America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone right/America/Salvador -3:00 Brazil BR%sT
Zone right/America/Brasilia -3:00 Brazil BR%sT
Zone right/Brazil/Central -3:00 Brazil BR%sT
Zone right/Brazil/Brasilia -3:00 Brazil BR%sT
Zone right/Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone right/Brazil/Salvador -3:00 Brazil BR%sT
Zone right/Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone Brazil/Central -3:00 Brazil BR%sT
Zone Brazil/Brasilia -3:00 Brazil BR%sT
Zone Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone Brazil/Salvador -3:00 Brazil BR%sT
Zone Brazil/East -3:00 Brazil BR%sT
Zone posix/Brazil/East -3:00 Brazil BR%sT
Zone right/Brazil/East -3:00 Brazil BR%sT
Zone Brazil/West -4:00 Brazil BRW%sT
Zone Brazil/Manaus -4:00 Brazil BRW%sT
Zone Brazil/Rondonia -4:00 Brazil BRW%sT
Zone Brazil/Roraima -4:00 Brazil BRW%sT
Zone Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone posix/Brazil/Manaus -4:00 Brazil BRW%sT
Zone posix/Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone right/Brazil/Manaus -4:00 Brazil BRW%sT
Zone right/Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone posix/America/Manaus -4:00 Brazil BRW%sT
Zone right/America/Manaus -4:00 Brazil BRW%sT
Zone Brazil/Acre -5:00 Brazil BRA%sT

173
LDP/howto/docbook/TimePrecision-HOWTO/TimePrecision-HOWTO.xml
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@ -1,19 +1,23 @@
<?xml version="1.0"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<?xml-stylesheet href="file:/usr/share/sgml/docbook/xsl-stylesheets/xhtml/docbook.xsl" type="text/xsl"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
<!ENTITY brztxt SYSTEM "Brazil.txt">
]>
<article>
<article xsl:version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<articleinfo>
<title>Managing Accurate Date and Time</title>
<copyright><year>2002,2003</year><holder>Avi Alkalay</holder></copyright>
<copyright><year>2002,2003,2004,2005</year><holder>Avi Alkalay</holder></copyright>
<authorgroup>
<author>
<firstname>Avi</firstname>
<surname>Alkalay</surname>
<email>avi unix sh</email>
<affiliation>
<orgdiv>Linux, Open Standards consultant :: Senior IT and Software Architect</orgdiv>
<orgname>IBM Linux Impact Team :: <ulink url="http://ibm.com/linux">ibm.com/linux</ulink></orgname>
<email>avi unix sh</email>
</affiliation>
</author>
<othercredit>
@ -30,28 +34,38 @@
</othercredit>
<othercredit>
<firstname>Takeo</firstname><surname>Nakano</surname>
<email>nakano at apm.seikei.ac.jp</email>
<contrib><ulink url="http://www.linux.or.jp/JF/JFdocs/TimePrecision-HOWTO/">Japanese translation</ulink></contrib>
</othercredit>
<othercredit>
<firstname>SHAKI</firstname>
<email>sha-ki at narod.ru</email>
<contrib><ulink url="http://computerlib.narod.ru/html/linuxtime.htm">Russian translation</ulink></contrib>
</othercredit>
<othercredit>
<firstname>Mihaly Gyulai</firstname>
<email>gyulai at fbi pont hu</email>
<contrib><ulink url="http://tldp.fsf.hu/HOWTO/TimePrecision-HOWTO-hu/index.html">Hungarian translation (magyar forditas)</ulink>, the chorny section and the very first section</contrib>
</othercredit>
<othercredit>
<firstname>Philippe Wautelet</firstname>
<email>gyulai at fbi pont hu</email>
<contrib><ulink url="http://www.traduc.org/docs/HOWTO/lecture/TimePrecision-HOWTO.html">French translation</ulink></contrib>
</othercredit>
</authorgroup>
<pubdate>2005-05-04</pubdate>
<pubdate>2005-10-12</pubdate>
<revhistory>
<revision>
<revnumber>1.0.9</revnumber>
<date>2005-05-03</date>
<revnumber>2005-10-12</revnumber>
<date>12 Oct 2005</date>
<authorinitials>Avi</authorinitials>
<revremark>The Brazil zic file is now external and updated</revremark>
</revision>
<revision>
<revnumber>2005-05-03</revnumber>
<date>03 May 2005</date>
<authorinitials>Avi</authorinitials>
<revremark>Included link to french translation</revremark>
</revision>
@ -63,7 +77,7 @@
</revision>
<revision>
<revnumber>1.0.7</revnumber>
<date>2004-07-09</date>
<date>9 Jul 2004</date>
<authorinitials>avi</authorinitials>
<revremark>Disclaimer near to license, to let people know they can translate without asking permission.</revremark>
<revremark>Small fixes in some phrases.</revremark>
@ -173,7 +187,7 @@
<itemizedlist>
<listitem><para>Softwares that deal with transactions</para></listitem>
<listitem><para>Commercial applications (e.g. eBay)</para></listitem>
<listitem><para>Mail and messaging-releted client and servers</para></listitem>
<listitem><para>Mail and messaging-related client and servers</para></listitem>
<listitem><para>Websites that use cookies</para></listitem>
<listitem><para>Distributed web applications</para></listitem>
<listitem><para>Web services</para></listitem>
@ -255,134 +269,7 @@
<para>Some countries, like Brazil, don't have a fixed day to start Daylight Savings Time. It is defined every year, a couple of months before summer, and you may end up in a situation you'll have to change your zoneinfo file, which was compiled by <command>zic</command> from a text file like this.</para>
<example><title>Brazilian Zone Info text file</title>
<programlisting>
# Brazil Time Zones
#
# Brazilian Time Zones are:
# BREST: East of Brasilia. Fernando de Noronha.
# BRST: Brasilia, S&atilde;o Paulo, Rio, Northeast, South etc
# BRWST: West of Brasilia. Mato Grosso, Manaus
# BRAST: Acre.
#
# In daylight saving time, letter 'S' changes to 'D'.
#
# To install, make:
#
# # zic Brazil.txt
#
# Zone files will be installed in /usr/share/zoneinfo (depends on your
# distribution). Then, make a symbolic link from your zone to /etc/localtime:
#
# # ln -sf /usr/share/zoneinfo/Brazil/Brasilia /etc/localtime
#
#
# If you have updates and new standards to this file please send to
#
# Avi Alkalay &lt;avi @ unix.sh&gt;
#
# Last update: 18 Nov 2000
# This file is available at http://avi.alkalay.net/linux/zoneinfo/
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Brazil 1931 1932 - Oct 3 0:00 1:00 D
Rule Brazil 1932 1933 - Mar 31 0:00 0 S
Rule Brazil 1949 only - Dec 1 0:00 1:00 D
Rule Brazil 1950 only - Apr 30 0:00 0 S
Rule Brazil 1950 1952 - Dec 1 0:00 1:00 D
Rule Brazil 1951 only - Apr 16 0:00 0 S
Rule Brazil 1952 only - Mar 31 0:00 0 S
Rule Brazil 1953 only - Feb 28 0:00 0 S
Rule Brazil 1963 only - Oct 23 0:00 1:00 D
Rule Brazil 1964 only - Mar 1 0:00 0 S
Rule Brazil 1965 only - Jan 31 0:00 1:00 D
Rule Brazil 1965 only - Mar 31 0:00 0 S
Rule Brazil 1965 only - Dec 1 0:00 1:00 D
Rule Brazil 1966 1968 - Mar 1 0:00 0 S
Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D
Rule Brazil 1984 only - Nov 2 0:00 1:00 D
Rule Brazil 1985 only - Mar 15 0:00 0 S
Rule Brazil 1985 only - Nov 2 0:00 1:00 D
Rule Brazil 1986 only - Mar 15 0:00 0 S
Rule Brazil 1986 only - Oct 25 0:00 1:00 D
Rule Brazil 1987 only - Feb 14 0:00 0 S
Rule Brazil 1987 only - Oct 25 0:00 1:00 D
Rule Brazil 1988 only - Feb 7 0:00 0 S
Rule Brazil 1988 only - Oct 16 0:00 1:00 D
Rule Brazil 1989 only - Jan 29 0:00 0 S
Rule Brazil 1989 only - Oct 15 0:00 1:00 D
Rule Brazil 1990 only - Feb 11 0:00 0 S
Rule Brazil 1990 only - Oct 21 0:00 1:00 D
Rule Brazil 1991 only - Feb 17 0:00 0 S
Rule Brazil 1991 only - Oct 20 0:00 1:00 D
Rule Brazil 1992 only - Feb 9 0:00 0 S
Rule Brazil 1992 only - Oct 25 0:00 1:00 D
Rule Brazil 1993 only - Jan 31 0:00 0 S
Rule Brazil 1993 only - Oct 17 0:00 1:00 D
Rule Brazil 1994 only - Feb 20 0:00 0 S
Rule Brazil 1994 only - Oct 16 0:00 1:00 D
Rule Brazil 1995 only - Feb 19 0:00 0 S
Rule Brazil 1995 only - Oct 15 0:00 1:00 D
Rule Brazil 1996 only - Feb 11 0:00 0 S
Rule Brazil 1996 only - Oct 06 0:00 1:00 D
Rule Brazil 1997 only - Feb 16 0:00 0 S
Rule Brazil 1997 only - Oct 06 0:00 1:00 D
Rule Brazil 1998 only - Mar 01 0:00 0 S
Rule Brazil 1998 only - Oct 11 0:00 1:00 D
Rule Brazil 1999 only - Feb 21 0:00 0 S
Rule Brazil 1999 only - Oct 03 0:00 1:00 D
Rule Brazil 2000 only - Feb 27 0:00 0 S
Rule Brazil 2000 only - Oct 8 0:00 1:00 D
Rule Brazil 2001 only - Feb 18 0:00 0 S
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
Zone Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone posix/Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone right/Brazil/DeNoronha -2:00 Brazil BRE%sT
Zone Brazil/East -2:00 Brazil BRE%sT
Zone posix/Brazil/East -2:00 Brazil BRE%sT
Zone right/Brazil/East -2:00 Brazil BRE%sT
Zone America/Sao_Paulo -3:00 Brazil BR%sT
Zone America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone America/Brasilia -3:00 Brazil BR%sT
Zone posix/America/Sao_Paulo -3:00 Brazil BR%sT
Zone posix/America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone posix/America/Salvador -3:00 Brazil BR%sT
Zone posix/America/Brasilia -3:00 Brazil BR%sT
Zone posix/Brazil/Central -3:00 Brazil BR%sT
Zone posix/Brazil/Brasilia -3:00 Brazil BR%sT
Zone posix/Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone posix/Brazil/Salvador -3:00 Brazil BR%sT
Zone posix/Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone right/America/Sao_Paulo -3:00 Brazil BR%sT
Zone right/America/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone right/America/Salvador -3:00 Brazil BR%sT
Zone right/America/Brasilia -3:00 Brazil BR%sT
Zone right/Brazil/Central -3:00 Brazil BR%sT
Zone right/Brazil/Brasilia -3:00 Brazil BR%sT
Zone right/Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone right/Brazil/Salvador -3:00 Brazil BR%sT
Zone right/Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone Brazil/Central -3:00 Brazil BR%sT
Zone Brazil/Brasilia -3:00 Brazil BR%sT
Zone Brazil/Sao_Paulo -3:00 Brazil BR%sT
Zone Brazil/Rio_de_Janeiro -3:00 Brazil BR%sT
Zone Brazil/Salvador -3:00 Brazil BR%sT
Zone Brazil/West -4:00 Brazil BRW%sT
Zone Brazil/Manaus -4:00 Brazil BRW%sT
Zone Brazil/Rondonia -4:00 Brazil BRW%sT
Zone Brazil/Roraima -4:00 Brazil BRW%sT
Zone Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone posix/Brazil/Manaus -4:00 Brazil BRW%sT
Zone posix/Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone right/Brazil/Manaus -4:00 Brazil BRW%sT
Zone right/Brazil/Mato_Grosso -4:00 Brazil BRW%sT
Zone posix/America/Manaus -4:00 Brazil BRW%sT
Zone right/America/Manaus -4:00 Brazil BRW%sT
Zone Brazil/Acre -5:00 Brazil BRA%sT
&brztxt;
</programlisting>
</example>
<para>The <command>Rule</command> block defines the date and time we change the Time Zone, while in the <command>Zone</command> block we reference the <command>Rule</command> will manage it. Note that the <command>Zone</command> name is actually the file name under <filename class="directory">/usr/share/zoneinfo</filename> directory, and here we defined several different names for the same Time Zone, just to be easyer for people to find their zone.</para>
@ -521,7 +408,9 @@ server ntp2.my.com # My second local relay
</calloutlist>
</example>
<para>The last step is to start or restart the <acronym>NTP</acronym> daemons in each machine:</para>
<screen><prompt>bash# </prompt><command>service ntpd restart</command></screen>
<screen>
<prompt>bash# </prompt><command>service ntpd restart</command>
</screen>
</section>
<section id="ntp.watch"><title>Watching Your Box Synchronizing</title>
<para>Now you have everything setup. <acronym>NTP</acronym> will softly keep your machine time synchronized. You can watch this process using the NTP Query (<command>ntpq</command> command):</para>
@ -607,7 +496,9 @@ server ntp2.my.com # My second local relay
</section>
<section id="ntp.boot"><title>Configure to Automatically Run <acronym>NTP</acronym> at Boot</title>
<para>You may want to have <acronym>NTP</acronym> running all the time even if you reboot your machine. On each machine, do the following:</para>
<screen><prompt>bash# </prompt><command>chkconfig --level 2345 ntpd on</command></screen>
<screen>
<prompt>bash# </prompt><command>chkconfig --level 2345 ntpd on</command>
</screen>
<para>This will ensure autostart.</para>
<para>If your machine is up and running for a long time (months, years) without rebooting, you'll find a big discrepancy between the inaccurate hardware clock and the (now very accurate) system time. Modern Linux distributions copy OS time to the HC everytime the system is shutdown, using a <link linkend="set.hwclock">mechanism similar to the <command>setclock</command> command</link>. This way, in the next OS boot, you'll get date and time almost as accurate as it was when you shutdown the machine.</para>
</section>
@ -629,10 +520,10 @@ server ntp2.my.com # My second local relay
<appendix id="about"><title>About this Document</title>
<para>Copyright 2002, Avi Alkalay.</para>
<para>This document must be distributed under the terms of <ulink url="http://www.gnu.org/copyleft/fdl.html">GNU Free Documentation License</ulink>. Please translate, adapt, improve, redistrubute using the original XML DocBook source right bellow. Let me know if you want me to put a link to your translation/adaptation/improvement here.</para>
<para>This document must be distributed under the terms of <ulink url="http://www.gnu.org/copyleft/fdl.html">GNU Free Documentation License</ulink>. Please translate, adapt, improve, redistribute using the original XML DocBook source right bellow. Let me know if you want me to put a link to your translation/adaptation/improvement here.</para>
<para>This document is published in the following locations:
<itemizedlist>
<listitem><para><ulink url="http://avi.alkalay.net/linux/docs/TimePrecision/">Official site</ulink> [<ulink url="http://avi.alkalay.net/linux/docs/TimePrecision/timeprecision-20050504.tar.gz">XML (DocBook) Source</ulink>]</para></listitem>
<listitem><para><ulink url="http://avi.alkalay.net/linux/docs/TimePrecision/">Official site</ulink> [<ulink url="http://avi.alkalay.net/linux/docs/TimePrecision/timeprecision-20051012.tar.gz">XML (DocBook) Source</ulink>]</para></listitem>
<listitem><para><ulink url="http://en.tldp.org/HOWTO/TimePrecision-HOWTO/">TLDP, as a HOWTO</ulink> [<ulink url="http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/TimePrecision-HOWTO.html">single page</ulink>] [<ulink url="http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/pdf/TimePrecision-HOWTO.pdf">PDF</ulink>]</para></listitem>
<listitem><para>Philippe Wautelet &lt;p.wautelet fractalzone.be&gt; <ulink url="http://www.traduc.org/docs/HOWTO/lecture/TimePrecision-HOWTO.html">french translation</ulink> [<ulink url="http://www.traduc.org/cgi-bin/viewcvs.cgi/guides_pratiques/TimePrecision-HOWTO.xml">XML (DocBook) Source</ulink>]</para></listitem>
<listitem><para>Takeo Nakano &lt;nakano at apm.seikei.ac.jp&gt; <ulink url="http://www.linux.or.jp/JF/JFdocs/TimePrecision-HOWTO/">japanese translation</ulink> [<ulink url="http://www.linux.or.jp/JF/JFdocs/TimePrecision-HOWTO.txt">txt version</ulink>]</para></listitem>