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Will check if the given module is installed in the @INC. It will print the path and return 0 if found, or 1 otherwise.
Based on script from SharpyWarpy in http://www.linuxquestions.org/questions/linux-general-1/how-to-list-all-installed-perl-modules-216603/
There are 6 alternatives - vote for the best!
Shows the path if the module is installed or exit quietly (to simply avoid the 'No documentation found' msg).
This attempts to load a Perl Module (-M flag) and use version 9999, since no module has a version this high, Perl exits either a) telling you the version of the module installed or b) tells you it can't find the module.
This version uses a bash function and does not print the path to the module.
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