As I had said, it all depends on what you are trying to achieve. If you're on deadline for a temporary hack, and there is such a thing- then you should be aware of your enviroment. Perl was originally a collection of unix hacks and tools, wasn't it?
You don't code a distribution app that depends on unix tools. But on day to day problems in the office, maintaining a hosting server, whatever- It's shooting yourself in the foot if you imagine perl is the only tool in your box.
The original post was what would *i* do. I got tangled up and wrote a solution that does not address the question.
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