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Online Perl Compiler

Run Perl scripts online with Perl 5.40. Write a script, press Run, and see what it prints beside your code, with warnings and errors shown with their line numbers. Scripts can read input from STDIN as they run, and the core modules that ship with Perl are included.

How to run Perl code online

  1. This page opens with Perl selected, so you can start typing straight away.
  2. Write your code in the editor, or open files from your computer: single files, or a whole project as a .zip.
  3. Press Run, or Ctrl+Enter. The output appears in the panel beside the editor, and when the program asks for input you type it there and press Enter.
  4. Share a copy with a link, or save your files to your computer.

Perl 5.40 on Online IDE

  • Scripts run with the perl command, so print writes straight to the output panel.
  • <STDIN> reads a line of input: type it in the output panel and press Enter. Use chomp to drop the newline.
  • Add use strict and use warnings to catch typos. Errors and warnings show the file name and line number.
  • Perl's core modules are included. Modules from CPAN are not installed.

Example: a Perl program that reads input

use strict;
use warnings;

print "Enter some words: ";
chomp(my $line = <STDIN>);

my %count;
$count{lc $_}++ for split ' ', $line;

for my $word (sort keys %count) {
    print "$word: $count{$word}\n";
}

Features of this tool

  • Simple and fastA clean, lightweight editor that opens instantly.
  • Powered by AceThe Ace code editor, with syntax highlighting, autocompletion and bracket matching.
  • Interactive programsType input into the terminal while your program runs.
  • Several filesWork in tabs, open files or a .zip from your computer, and save the project back to disk.
  • Made for learningHelpful for beginners to learn and practice programs.
  • Light and dark themesPlus 39 editor themes, a choice of coding fonts, and Vim, Emacs or VS Code keys.
  • Keep your outputCopy or download the program output in one click.
  • Share by linkSave your code in the cloud and open it anywhere.

Frequently asked questions

Which Perl version does Online IDE use?

Perl 5.40, run with the perl command on Linux.

How do I read input in a Perl script?

Read from <STDIN> where you need a line, then type it in the output panel and press Enter.

Can I use CPAN modules?

The modules that come with Perl, such as List::Util, Data::Dumper and POSIX, work. Modules from CPAN are not installed, and scripts cannot download them.

Contact us

For any feedback, queries or issues, please feel free to contact us or write to . We value your input and are committed to providing the best possible experience for our users.

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  • Extra tabs are closed
  • The editor goes back to the starter program

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    Help and shortcuts

    Online IDE is a web-based tool powered by the Ace code editor. Use it to learn, build, run and test your programs: open code from your computer, keep building here, and download the code and its output.

    Keyboard shortcuts

    Run or stop
    F8orCtrl↵
    Share code
    F9orCtrlH
    Save to disk
    F10orCtrlS
    Editor command palette
    F1
    Rename a tab
    Double-click it
    More file options
    Right-click a tab
    Jump to an error line
    Click it in the output

    Report a bug

    Found a bug or have an idea? Email us at .

    Data policy

    Your code is sent to the server only to run it and is cleared when it finishes. Shared code is kept until the expiry you choose.

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