Modern Perl, CPAN, regex power, and where it still wins — an honest technical deep-dive for engineers who've heard 'Perl is dead' and want to know what's actually true.
Regex
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Perl: Still Powering the World's Sysadmin Scripts -
Mastering grep for Text Searching Advanced grep techniques for searching through files and command output.
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sed: Stream Editor Essentials Using sed for powerful text transformations and in-place file editing.