350 lines
4.9 KiB
HTML
350 lines
4.9 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Alter target of /dev/systty</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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TITLE="Remote Serial Console HOWTO"
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TITLE="Configure incidentals"
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TITLE="Serial console is not /dev/modem"
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TITLE="Configure Pluggable Authentication Modules"
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>Remote Serial Console HOWTO</TH
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>Prev</A
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><TD
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WIDTH="80%"
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>Chapter 7. Configure incidentals</TD
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WIDTH="10%"
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VALIGN="bottom"
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><H1
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CLASS="SECTION"
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><A
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NAME="MISC-DEVSYSTTY"
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></A
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>7.5. Alter target of <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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></H1
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><P
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>In many Linux distributions the file <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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> is a symbolic link to the
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device which is used as the by the attached monitor and keyboard.
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See <A
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HREF="intro-word.html"
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>Section 1.3</A
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> for a fuller description.</P
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><P
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>If there is no attached keyboard and monitor or no wish to
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give the attached keyboard and monitor greater capabilities then a
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text terminal, then alter <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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> to point to the serial
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console.</P
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><P
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>Rather than directly altering this symbolic link, it is
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better to modify the configuration file used by
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<B
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CLASS="COMMAND"
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>MAKEDEV</B
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>, which is then run to recreate the
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symbolic link. The configuration file is in the directory
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<TT
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CLASS="FILENAME"
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>/etc/makedev.d</TT
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>. The default
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configuration will point to the first virtual terminal, as shown in
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<A
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HREF="misc-devsystty.html#MISC-DEVSYSTTY-DEFAULT"
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>Figure 7-6</A
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>.</P
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><DIV
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CLASS="FIGURE"
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><A
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NAME="MISC-DEVSYSTTY-DEFAULT"
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></A
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><P
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><B
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>Figure 7-6. Default value of <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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> in
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<TT
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CLASS="FILENAME"
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>/etc/makedev.d/linux-2.4.x</TT
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></B
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></P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="PROGRAMLISTING"
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>l systty tty0</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></DIV
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><P
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>Modify this to point to the serial port being used by the
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console, as shown in <A
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HREF="misc-devsystty.html#MISC-DEVSYSTTY-SERIAL"
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>Figure 7-7</A
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>.</P
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><DIV
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CLASS="FIGURE"
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><A
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NAME="MISC-DEVSYSTTY-SERIAL"
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></A
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><P
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><B
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>Figure 7-7. Alter value of <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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> in
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<B
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CLASS="COMMAND"
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>MAKEDEV</B
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> configuration file</B
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></P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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><TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>cd /etc/makedev.d</B
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>
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<TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>fgrep systty *</B
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>
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<TT
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CLASS="COMPUTEROUTPUT"
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>linux-2.4.x:l systty tty0</TT
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>
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<TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>vi linux-2.4.x</B
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></PRE
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></FONT
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></TD
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></TR
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></TABLE
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="PROGRAMLISTING"
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>l systty ttyS0</PRE
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></FONT
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></TD
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></TR
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></TABLE
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></DIV
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><P
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>Now re-create <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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> using its new definition, as
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shown in <A
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HREF="misc-devsystty.html#MISC-DEVSYSTTY-CREATE"
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>Figure 7-8</A
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>.</P
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><DIV
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CLASS="FIGURE"
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><A
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NAME="MISC-DEVSYSTTY-CREATE"
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></A
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><P
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><B
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>Figure 7-8. Installing new value of <TT
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CLASS="FILENAME"
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>/dev/systty</TT
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></B
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></P
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><TABLE
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BORDER="1"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="SCREEN"
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><TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>cd /dev</B
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>
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<TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>rm systty</B
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>
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<TT
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CLASS="PROMPT"
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>bash#</TT
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> <B
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CLASS="COMMAND"
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>./MAKEDEV systty</B
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></PRE
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></FONT
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></TD
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></TR
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></TABLE
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></DIV
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></DIV
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><DIV
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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HREF="misc-devmodem.html"
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ACCESSKEY="P"
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>Prev</A
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Serial console is not <TT
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CLASS="FILENAME"
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>/dev/modem</TT
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></TD
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><TD
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WIDTH="34%"
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VALIGN="top"
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>Configure Pluggable Authentication Modules</TD
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