Author: bdubbs
Date: 2005-07-27 22:56:52 -0600 (Wed, 27 Jul 2005)
New Revision: 4814
Modified:
trunk/BOOK/introduction/welcome/changelog.xml
trunk/BOOK/postlfs/config/logon.xml
Log:
Updated escape sequence discussion in /etc/issue discussion in Chapter 3
Modified: trunk/BOOK/introduction/welcome/changelog.xml
===================================================================
--- trunk/BOOK/introduction/welcome/changelog.xml 2005-07-28 04:46:42 UTC
(rev 4813)
+++ trunk/BOOK/introduction/welcome/changelog.xml 2005-07-28 04:56:52 UTC
(rev 4814)
@@ -25,6 +25,11 @@
<itemizedlist>
<listitem>
+ <para>July 27th 2005 [bdubbs]: Updated escape sequence explanation
+ in the /etc/issue discussion in Chapter 3.</para>
+ </listitem>
+
+ <listitem>
<para>July 27th 2005 [tushar]: Updated to aspell-0.60.3.</para>
</listitem>
Modified: trunk/BOOK/postlfs/config/logon.xml
===================================================================
--- trunk/BOOK/postlfs/config/logon.xml 2005-07-28 04:46:42 UTC (rev 4813)
+++ trunk/BOOK/postlfs/config/logon.xml 2005-07-28 04:56:52 UTC (rev 4814)
@@ -33,24 +33,31 @@
configuration file and will <emphasis>not</emphasis> interpret the
escape sequences shown below.</para>
- <para>One of the most common things which people want to do is clear
- the screen at each logon. The easiest way of doing that is to put a "clear"
- escape sequence into <filename>/etc/issue</filename>. A simple way of
- doing this is to issue the command <command>clear > /etc/issue</command>.
- This will insert the relevant escape code into the start of the
+ <para>One of the most common things which people want to do is clear the
+ screen at each logon. The easiest way of doing that is to put a "clear"
+ escape sequence into <filename>/etc/issue</filename>. A simple way of doing
+ this is to issue the command <command>clear > /etc/issue</command>. This
+ will insert the relevant escape code into the start of the
<filename>/etc/issue</filename> file. Note that if you do this, when you
- edit the file, you should leave the ^[c character on the first line
alone.</para>
+ edit the file, you should leave the characters (normally '^[[H^[[2J') on the
+ first line alone.</para>
+
+ <note><para>Terminal escape sequences are special codes recognized by the
+ terminal. The ^[ represents an ASCII ESC character. The sequence ESC [ H
+ puts the cursor in the upper left hand corner of the screen and ESC 2 J
+ erases the screen. For more information on terminal escape sequences see
+ <ulink url='http://rtfm.etla.org/xterm/ctlseq.html'/></para></note>
- <para>The following escape sequences are recognized by
<command>agetty</command>
+ <para>The following sequences are recognized by <command>agetty</command>
(the program which usually parses <filename>/etc/issue</filename>). This
information is from <command>man agetty</command> where you can find
extra information about the logon process.</para>
- <para>The <filename>issue</filename> file can contain certain escape codes to
- display various information. All escape codes consist of a backslash (\)
- immediately followed by one of the letters explained below (so
- <option>\d</option> in <filename>/etc/issue</filename> would
- insert the current date).</para>
+ <para>The <filename>issue</filename> file can contain certain character
+ sequences to display various information. All <filename>issue</filename>
+ sequences consist of a backslash (\) immediately followed by one of the
+ letters explained below (so <option>\d</option> in
+ <filename>/etc/issue</filename> would insert the current date).</para>
<screen><literal>b Insert the baudrate of the current line.
d Insert the current date.
--
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