That doesn't seem to work for me. First, typing that in the shell gives me an error: zsh: no matches found: /(.*)/ So, I tried typing: cpan upgrade '/(.

That doesn't seem to work for me. First, typing that in the shell gives me an error: zsh: no matches found: /(.*)/ So, I tried typing: cpan upgrade '/(.*)/' Which at least kept my shell from trying to expand the last argument, but cpan complained: Warning: Cannot install upgrade, don't know what it is. Try the command i /upgrade/ to find objects with matching identifiers. Sorry, install with a regular expression is only supported when unambiguous. Rejecting argument '/(.*)/' So, instead at the shell I just typed: cpan Then, at the cpan[1]> prompt, I typed: upgrade That seemed to work.