or download this
$ cat diff.pl
use strict;
...
Platform:
osname=linux, osvers=2.6.9-22.18.bz155725.elsmp, archname=i386-lin
+ux-thread-multi
uname='linux hs20-bc1-6.build.redhat.com 2.6.9-22.18.bz155725.elsm
+p #1 smp thu nov 17 15:34:08 est 2005 i686 i686 i386 gnulinux '