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Perl Cheat Sheet

Print-ready cheat sheet for Perl, organized for fast lookup, study, and desk-side use

Source
Perl Documentation (perldoc.perl.org)
License
MIT
Updated
2026-03-27

Sample

What's in this cheat sheet

  • Basics
  • Variables
  • Operators
  • Control Flow
  • Subroutines
  • Regex
  • File I/O
  • Arrays & Hashes
  • References
  • Modules

Hello World

#!/usr/bin/perl
use strict;
use warnings;
print "Hello, World!\n";
say "Hello, World!";  # with use feature 'say';

Run Perl

perl script.pl           # run a file
perl -e 'print "hi\n"'  # run inline
perl -ne 'print' file   # process file line by line

Comments & Documentation

# single-line comment
=pod
Multi-line POD documentation
=cut

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