68 lines
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68 lines
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<!Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
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<TITLE>4.6.1 Using floppies for backups</TITLE>
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<BR> <HR><A NAME=tex2html4022 HREF="node178.html"><IMG ALIGN=BOTTOM ALT="next" SRC="next_motif.gif"></A> <A NAME=tex2html4020 HREF="node176.html"><IMG ALIGN=BOTTOM ALT="up" SRC="up_motif.gif"></A> <A NAME=tex2html4014 HREF="node176.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif"></A> <A NAME=tex2html4024 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <A NAME=tex2html4025 HREF="node250.html"><IMG ALIGN=BOTTOM ALT="index" SRC="index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html4023 HREF="node178.html">4.6.2 Using floppies as </A>
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<B>Up:</B> <A NAME=tex2html4021 HREF="node176.html">4.6 Using Floppies and </A>
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<B> Previous:</B> <A NAME=tex2html4015 HREF="node176.html">4.6 Using Floppies and </A>
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<BR> <HR> <P>
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<H2><A NAME=SECTION00661000000000000000>4.6.1 Using floppies for backups</A></H2>
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<P>
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<A NAME=4676> </A>
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<A NAME=4677> </A>
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<A NAME=4678> </A>
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The easiest way to make a backup using floppies is with <tt>tar</tt>.
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The command
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<P><TT> # <em>tar cvfzM /dev/fd0 /</em>
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<P></TT>
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will make a complete backup of your system using the floppy drive
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<tt>/dev/fd0</tt>. The ``<tt>M</tt>'' option to <tt>tar</tt> allows the
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backup to be a multivolume backup; that is, when one floppy is full,
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<tt>tar</tt> will prompt for the next. The command
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<P><TT> # <em>tar xvfzM /dev/fd0</em>
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<P></TT>
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can be used to restore the complete backup.
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This method can also be used if you have a tape drive (<tt>/dev/rmt0</tt>)
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connected to your system.
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<P>
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<A NAME=4731> </A>
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<A NAME=4732> </A>
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Several other programs exist for making multiple-volume backups; the
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<tt>backflops</tt> program found on <tt>tsx-11.mit.edu</tt> may come in handy.
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<P>
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Making a complete backup of the system can be time- and resource-consuming.
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Most system administrators use a incremental backup policy, in which every
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month a complete backup is taken, and every week only those files which
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have been modified in the last week are backed up. In this case, if
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you trash your system in the middle of the month, you can simply restore
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the last full monthly backup, and then restore the last weekly backups
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as needed.
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<P>
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<A NAME=4695> </A>
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<A NAME=4733> </A>
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The <tt>find</tt> command can be useful in locating files which have
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changed since a certain date. Several scripts for managing
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incremental backups can be found on <tt>sunsite.unc.edu</tt>.
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<A NAME=4699> </A>
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<A NAME=4700> </A>
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<P>
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<BR> <HR><A NAME=tex2html4022 HREF="node178.html"><IMG ALIGN=BOTTOM ALT="next" SRC="next_motif.gif"></A> <A NAME=tex2html4020 HREF="node176.html"><IMG ALIGN=BOTTOM ALT="up" SRC="up_motif.gif"></A> <A NAME=tex2html4014 HREF="node176.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif"></A> <A NAME=tex2html4024 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <A NAME=tex2html4025 HREF="node250.html"><IMG ALIGN=BOTTOM ALT="index" SRC="index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html4023 HREF="node178.html">4.6.2 Using floppies as </A>
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<B>Up:</B> <A NAME=tex2html4021 HREF="node176.html">4.6 Using Floppies and </A>
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<B> Previous:</B> <A NAME=tex2html4015 HREF="node176.html">4.6 Using Floppies and </A>
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<BR> <HR> <P>
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<BR> <HR>
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<P><ADDRESS>
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<I>Matt Welsh <BR>
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mdw@sunsite.unc.edu</I>
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