or download this
$ perl -v|head -n2
This is perl 5, version 14, subversion 1 (v5.14.1) built for x86_64-li
+nux
$ perl obfu.pl
Just another Perl hacker,Unknown warnings category 'CODE(0x1151998)' a
+t obfu.pl line 6
BEGIN failed--compilation aborted at obfu.pl line 9.