tldr/pages/common/perl.md

# 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}}`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00			`# perl`

			`> The Perl 5 language interpreter.`

perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			`- Parse and execute a Perl script:`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
			`perl {{script.pl}}`

perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			`- Check syntax errors on a Perl script:`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			`perl -c {{script.pl}}`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			`- Parse and execute a perl statement:`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			`perl -e {{perl_statement}}`
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
perl: various minor tweaks - use generic names in the descriptions, since they can be directly matched to the corresponding tokens - move the -e example to appear right before the -M -e example - make description of -M -e example more explicit (to match the plain -e example) 2016-11-05 19:17:40 +00:00			- Run a Perl script in debug mode, using `perldebug`:
perl: add page (#1142) 2016-11-05 19:14:19 +00:00
			`perl -d {{script.pl}}`
perl: add pie example per issue #1239 2017-04-15 16:48:00 +01:00
perl: improve descriptions of -pie examples 2017-04-22 14:40:57 +01:00			`- Loo[p] over all lines of a file, editing them [i]n-place using a find/replace [e]xpression:`
perl: add pie example per issue #1239 2017-04-15 16:48:00 +01:00
			`perl -p -i -e 's/{{find}}/{{replace}}/g' {{filename}}`

perl: improve descriptions of -pie examples 2017-04-22 14:40:57 +01:00			`- Run a find/replace expression on a file, saving the original file with a given extension:`
perl: add pie example per issue #1239 2017-04-15 16:48:00 +01:00
			`perl -p -i'.old' -e 's/{{find}}/{{replace}}/g' {{filename}}`
perl: tweak the -0 example 2017-05-13 17:01:12 +01:00
			`- 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}}`