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+<H2><A NAME="s8">8. CVS</A></H2>
+
+<P>CVS stands for "Concurrent Versions System" and the CVS for DXSpider is held
+at
+<A HREF="http://www.sourceforge.net">Sourceforge</A>. This means
+that it is possible to update your DXSpider installation to the latest
+sources by using a few simple commands.
+<P>
+<P>THIS IS NOT FOR THE FAINT HEARTED!!! ONLY DO THIS IF YOU HAVE A TEST
+INSTALLATION OR ARE WILLING TO HAVE YOUR CLUSTER CRASH ON YOU!!!
+THIS MUST BE CONSIDERED AT LEAST BETA TESTING AND MAYBE EVEN ALPHA!!
+YOU HAVE BEEN WARNED!!!
+<P>
+<P>DID I MENTION..... ONLY DO THIS IF YOU ARE WILLING TO ACCEPT THE
+CONSEQUENCES!!!
+<P>
+<P>I am of course assuming that you have a machine with both DXSpider and
+Internet access running.
+<P>
+<P>BEFORE YOU EVEN CONSIDER STARTING WITH THIS MAKE A BACKUP OF YOUR
+ENTIRE SPIDER TREE!!
+<P>
+<P>Assuming you are connected to the Internet, you need to login to the
+CVS repository and then update your Spider source. There are several
+steps which are listed below ...
+<P>
+<P>First login as the user <EM>sysop</EM>. Next you need to connect to the CVS
+repository. You do this with the command below ...
+<P>
+<PRE>
+cvs -d:pserver:anonymous@cvs.DXSpider.sourceforge.net:/cvsroot/dxspider login
+</PRE>
+<P>You will get a password prompt. Simply hit return here and your machine should
+return to a normal linux prompt.
+<P>
+<P>What happens next depends on whether you have an existing installation that
+you want to update with the latest and greatest or whether you just want
+to see what is there and/or run it on a new machine for testing.
+<P>If you are installing Spider from CVS then change directory to /home/sysop
+<P>If you are wanting to update Spider then cd to /tmp
+<P>
+<P>The next step will create a brand new 'spider' directory in your current
+directory.
+<P>
+<PRE>
+cvs -z3 -d:pserver:anonymous@cvs.DXSpider.sourceforge.net:/cvsroot/dxspider co spider
+</PRE>
+<P>This command is all on one line.
+<P>
+<P>Hopefully your screen should show you downloading files. The -z3 simply compresses
+the download to improve speed.
+When this has finished, you will have exactly the same as if you had untarred a full
+tarball PLUS some extra directories and files that CVS needs to do the magic that
+it does.
+<P>
+<P>Now if you are doing a new installation, that's it. Carry on as if you have
+just downloaded and untarred the lastest tarball.
+<P>
+<P>If you want to upgrade your current installation then do this ...
+<P>
+<BLOCKQUOTE><CODE>
+<PRE>
+tar cvfz /tmp/s.tgz spider
+cd /
+tar xvfzp /tmp/s.tgz
+</PRE>
+</CODE></BLOCKQUOTE>
+<P>This is assuming you downloaded to the /tmp directory of course.
+<P>
+<P>NOTE: the 'p' on the end of the 'xvfz' is IMPORTANT! It keeps the permissions
+correct. YOU WERE LOGGED IN AS THE USER SYSOP WEREN'T YOU?????
+<P>Remember to recompile the C client (cd /spider/src; make)
+<P>
+<P>At this point the files have been upgraded. You can (usually) restart the cluster
+in your own time. However, if you attempt to use any new commands or features
+expect it to be fatal! At least your cluster will have been restarted then so it
+will be too late to worry about it!
+<P>
+<P>Now the magic part! From now on when you want to update, simply connect to the
+Internet and then, as the user <EM>sysop</EM> ...
+<P>
+<BLOCKQUOTE><CODE>
+<PRE>
+cd /spider
+cvs -z3 update -d
+</PRE>
+</CODE></BLOCKQUOTE>
+<P>and your files will be updated. As above, remember to recompile the "C" client
+if it has been updated (CVS will tell you) and restart if any of the perl scripts
+have been altered or added, again, CVS will tell you.
+<P>
+<P>You will find any changes documented in the /spider/Changes file.
+<P>
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