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diff --git a/sag-0.6.1-www/sag-0.6.1.html/x531.html b/sag-0.6.1-www/sag-0.6.1.html/x531.html new file mode 100644 index 0000000..13eda2d --- /dev/null +++ b/sag-0.6.1-www/sag-0.6.1.html/x531.html @@ -0,0 +1,342 @@ +<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN"> +<HTML +><HEAD +><TITLE +>The /var filesystem</TITLE +><META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet"><LINK +REL="HOME" +TITLE="The Linux System Administrators' Guide" +HREF="book1.html"><LINK +REL="UP" +TITLE="Overview of the Directory Tree" +HREF="c212.html"><LINK +REL="PREVIOUS" +TITLE="The /usr filesystem" +HREF="x472.html"><LINK +REL="NEXT" +TITLE="The /proc filesystem" +HREF="x595.html"></HEAD +><BODY +BGCOLOR="#FFFFFF" +TEXT="#000000" +><DIV +CLASS="NAVHEADER" +><TABLE +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +>The Linux System Administrators' Guide</TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="x472.html" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +>Chapter 3. Overview of the Directory Tree</TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="x595.html" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><DIV +CLASS="SECT1" +><H1 +CLASS="SECT1" +><A +NAME="AEN531" +>The <TT +CLASS="FILENAME" +>/var</TT +> filesystem</A +></H1 +><P +>The <TT +CLASS="FILENAME" +>/var</TT +> contains data that is changed when the system is + running normally. It is specific for each system, i.e., not + shared over the network with other computers. + + <DIV +CLASS="GLOSSLIST" +><DL +><DT +><B +><TT +CLASS="FILENAME" +>/var/catman</TT +></B +></DT +><DD +><P +>A cache for man pages that are formatted + on demand. The source for manual pages is usually + stored in <TT +CLASS="FILENAME" +>/usr/man/man*</TT +>; some + manual pages might come with a pre-formatted version, + which is stored in <TT +CLASS="FILENAME" +>/usr/man/cat*</TT +>. + Other manual pages need to be formatted when they are + first viewed; the formatted version is then stored + in <TT +CLASS="FILENAME" +>/var/man</TT +> so that the next + person to view the same page won't have to wait for + it to be formatted. (<TT +CLASS="FILENAME" +>/var/catman</TT +> + is often cleaned in the same way temporary directories + are cleaned.)</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/lib</TT +></B +></DT +><DD +><P +>Files that change while the system is + running normally.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/local</TT +></B +></DT +><DD +><P +>Variable data for programs that are + installed in <TT +CLASS="FILENAME" +>/usr/local</TT +> (i.e., + programs that have been installed by the system + administrator). Note that even locally installed + programs should use the other <TT +CLASS="FILENAME" +>/var</TT +> + directories if they are appropriate, e.g., + <TT +CLASS="FILENAME" +>/var/lock</TT +>.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/lock</TT +></B +></DT +><DD +><P +>Lock files. Many programs + follow a convention to create a lock file in + <TT +CLASS="FILENAME" +>/var/lock</TT +> to indicate that they + are using a particular device or file. Other programs + will notice the lock file and won't attempt to use the + device or file.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/log</TT +></B +></DT +><DD +><P +>Log files from various + programs, especially <B +CLASS="COMMAND" +>login</B +> + (<TT +CLASS="FILENAME" +>/var/log/wtmp</TT +>, which logs all logins + and logouts into the system) and <B +CLASS="COMMAND" +>syslog</B +> + (<TT +CLASS="FILENAME" +>/var/log/messages</TT +>, where all + kernel and system program message are usually stored). + Files in <TT +CLASS="FILENAME" +>/var/log</TT +> can often grow + indefinitely, and may require cleaning at regular + intervals.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/run</TT +></B +></DT +><DD +><P +>Files that contain information about the + system that is valid until the system is next booted. + For example, <TT +CLASS="FILENAME" +>/var/run/utmp</TT +> + contains information about people currently logged + in.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/spool</TT +></B +></DT +><DD +><P +>Directories for mail, + news, printer queues, and other queued work. + Each different spool has its own subdirectory + below <TT +CLASS="FILENAME" +>/var/spool</TT +>, + e.g., the mailboxes of the users are in + <TT +CLASS="FILENAME" +>/var/spool/mail</TT +>.</P +></DD +><DT +><B +><TT +CLASS="FILENAME" +>/var/tmp</TT +></B +></DT +><DD +><P +>Temporary files that are large + or that need to exist for a longer time than + what is allowed for <TT +CLASS="FILENAME" +>/tmp</TT +>. + (Although the system administrator might not allow + very old files in <TT +CLASS="FILENAME" +>/var/tmp</TT +> + either.)</P +></DD +></DL +></DIV +></P +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="x472.html" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="book1.html" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="x595.html" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>The <TT +CLASS="FILENAME" +>/usr</TT +> filesystem</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="c212.html" +>Up</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>The <TT +CLASS="FILENAME" +>/proc</TT +> filesystem</TD +></TR +></TABLE +></DIV +></BODY +></HTML +>
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