In addition to dasgars comments, leave the system/default perl alone. It belongs to the system maintainer/OS vendor. Changing the system perl means that security upgrades to modules will not work anymore or will break your existing installations. Compile your own version(s) of Perl manually or using perlbrew.

In reply to Re^3: Installing cpan or cpanm modules on a behind-firewall machine with no Internet connection by Corion
in thread Installing cpan or cpanm modules on a behind-firewall machine with no Internet connection by morespinach

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