As a learner, I am fascinated with one liners in perl that could do something very useful in just one line
Given you are fascinated with Perl one-liners, you might also enjoy these old nodes:

In reply to Re: [Solved]: Thoughts on a section for popular one liners by eyepopslikeamosquito
in thread [Solved]: Thoughts on a section for popular one liners by Perl300

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