Squid Secondlife texture script found at http://wiki.phoenixviewer.com/squid_proxy_cache

store_url_rewrite

#!/usr/bin/perl
     
    $| = 1;
     
    while (<>) {
            chomp;
            if (m/sim(.*?)\.agni\.lindenlab\.com(.*?)\/cap\/(.*?)\/\?texture_id=(.*)/) {
                    print "http://agni.lindenlab.com/texture/" . $4 . "\n";
            } else {
                    print $_ . "\n";
            }
    }

test regex

test this with regexpal http://regexpal.com/
and put in
sim(.*?)\.agni\.lindenlab\.com(.*?)\/caps\/(.*?)\/?texture_id=(.*)

and test with
http://simXXXX.agni.lindenlab.com/cap/918c0998-68ce-4ac5-aada-a22f9af53e87/?texture_id=89556747-24cb-43ed-920b-47cabd15465f