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perl

The Perl 5 language interpreter.

Parse and execute a Perl script:

perl {{script.pl}}

Check syntax errors on a Perl script:

perl -c {{script.pl}}

Parse and execute a perl statement:

perl -e {{perl_statement}}

Run a Perl script in debug mode, using perldebug:

perl -d {{script.pl}}

Loo[p] over all lines of a file, editing them [i]n-place using a find/replace [e]xpression:

perl -p -i -e 's/{{find}}/{{replace}}/g' {{filename}}

Run a find/replace expression on a file, saving the original file with a given extension:

perl -p -i'.old' -e 's/{{find}}/{{replace}}/g' {{filename}}

Run a multi-line find/replace expression on a file, and save the result in another file:

perl -p0e 's/{{foo\nbar}}/{{foobar}}/g' {{input_file}} > {{output_file}}