unable to run perl scripts in BASH "Cannot Locate Switch.pm" -


i'm trying run perl in bash terminal typing 

perl helloworld.pl

but when try error message comes up.

can't locate switch.pm in @inc (you may need install switch module) (@inc contains: /library/perl/5.18/darwin-thread-multi-2-level ....)begin failed --compilation aborted at...

i've tried updating switch.pm using cpan either says can't install because missing yaml module, (i installed too.. , nothing), or says installed same error message comes up.

i'm using yosemite on mac. if has run or knows can find solution that'd appreciated. thank in advance!

switch.pm deprecated , no longer distributed core modules.

you should not use in production code if have option.


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