Thai Heng,

Since you are running Linux, you can do the following:

ln -s /usr/local/bin/perl.5.18.x /usr/local/bin/[ourperl]   ## [ ] wha
+tever makes sense
[download]

Also you should have a test script with 'use ...' for all CPAN modules that are required for your new Perl to work correctly. When Perl 5.20.x comes out, install/test it and then just change the link with the force parm ('-f') and everyone gets updated to the new Perl.

Good Luck

Regards...Ed