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+<!DOCTYPE HTML PUBLIC "-//Norman Walsh//DTD DocBook HTML 1.0//EN">
+<HTML
+><HEAD
+><TITLE
+>What to back up</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="Backups"
+HREF="c2187.html"><LINK
+REL="PREVIOUS"
+TITLE="Multilevel backups"
+HREF="x2315.html"><LINK
+REL="NEXT"
+TITLE="Compressed backups"
+HREF="x2417.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="x2315.html"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+>Chapter 10. Backups</TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
+><A
+HREF="x2417.html"
+>Next</A
+></TD
+></TR
+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="AEN2405"
+>What to back up</A
+></H1
+><P
+> You want to back up as much as possible. The major
+ exception is software that can be easily reinstalled,
+
+ <A
+NAME="AEN2408"
+HREF="#FTN.AEN2408"
+>[1]</A
+>
+
+ but even they may have configuration files that it is
+ important to back up, lest you need to do all the work to
+ configure them all over again. Another major exception is
+ the <TT
+CLASS="FILENAME"
+>/proc</TT
+> filesystem; since that only
+ contains data that the kernel always generates automatically,
+ it is never a good idea to back it up. Expecially the
+ <TT
+CLASS="FILENAME"
+>/proc/kcore</TT
+> file is unnecessary, since it
+ is just an image of your current physical memory; it's pretty
+ large as well. </P
+><P
+> Gray areas include the news spool, log files, and many
+ other things in <TT
+CLASS="FILENAME"
+>/var</TT
+>. You must decide what
+ you consider important. </P
+><P
+> The obvious things to back up are user files
+ (<TT
+CLASS="FILENAME"
+>/home</TT
+>) and system configuration files
+ (<TT
+CLASS="FILENAME"
+>/etc</TT
+>, but possibly other things scattered
+ all over the filesystem). </P
+></DIV
+><H3
+>Notes</H3
+><TABLE
+BORDER="0"
+CLASS="FOOTNOTES"
+WIDTH="100%"
+><TR
+><TD
+ALIGN="LEFT"
+VALIGN="TOP"
+WIDTH="5%"
+><A
+NAME="FTN.AEN2408"
+HREF="x2405.html#AEN2408"
+>[1]</A
+></TD
+><TD
+ALIGN="LEFT"
+VALIGN="TOP"
+WIDTH="95%"
+><P
+>You get to decide what's easy.
+ Some people consider installing from dozens of floppies
+ easy.</P
+></TD
+></TR
+></TABLE
+><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="x2315.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="x2417.html"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>Multilevel backups</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="c2187.html"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>Compressed backups</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+> \ No newline at end of file