Re: How to run Perl script at Mac OS (Darwin) Release?

Hashing of tools by shells has not been mentioned. It may not be part of the problem but on invocation many, if not all, shells examine the $PATH variable and make a table of executables that it finds. The table is then converted to a hashed lookup array in order to improve speed of response. (That probably makes little sense today but it was started during the days of mag tape.)

So if you create a perl script, place it somewhere in $PATH, and set its execute permission a running shell will not find it. A full path, perhaps starting with the current directory " . " always works.

In tcsh the command to rework the hash of tools is "rehash". Restarting the shell with a new Terminal.app window will do pretty much the same thing.

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