Perl source files (for scripts, not modules) should be named like whatItDoes.pl and checked in to source control. And you should have a script that "installs" your Perl scripts so that you can run them. That install script should do the following:

• adjust the path in the #! (unless you are lucky enough to have enough control of all of your systems so that /usr/bin/perl is always appropriate as Larry intended)
• copy the file into the appropriate directory in your PATH
• rename the file so it no longer ends in ".pl" so that you execute it simply as "whatItDoes", like every other command you use (because a tool getting reimplemented in a different language should not cause you to have to invoke it any differently)
• set execute permission (for some OSes)
• run pl2bat (for other OSes) -- Note that some prefer other ways of making it so that, on Win32, you simply invoke a Perl script using an extensionless name (not "perl ..." nor "whatItDoes.pl ...") and I'm not arguing against such alternatives; I'm simply arguing needing to know what language the whatItDoes tool was written in in order to use it is a mistake. (:

Though certainly not necessarily in that order, or even as that many steps.

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