perlbuilt-inspecial-variables

Where can I find information about Perl's special variables?

Perl has quite a few special variables such as @F, $!, %! ... etc. Where are all Perl's special variables documented?

Solution

  • All special variables used by Perl are documented in perldoc perlvar. You can view this document on your computer by running

    perldoc perlvar

    The documentation for a specific special variable can also be accessed at the command line using perldoc -v:

    perldoc -v @F

    You may need to escape/quote some variables to avoid interpolation by your shell:

    perldoc -v '$!'

    or

    perldoc -v "$!"

    if you are using cmd.exe.

    For more information:

    perldoc -h
perldoc perldoc