tldr/pages/common/perl.md
2017-04-26 10:32:58 +01:00

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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}}

  • Import module before execution of a perl statement:

perl -M{{module}} -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}}