Perl: How to check if there is something being piped in

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module::install::with

Module::Install::With(3)				User Contributed Perl Documentation				  Module::Install::With(3)

   interactive
       The "interactive" function tests for an install that has a user present (or at least, one in which it is reasonable for us to present
       prompts and other similar types of things).

       Returns true if in an interactive environment, or false otherwise.

   automated_testing
       Are we currently running in an automated testing environment, such as CPAN Testers.

       This is primarily a cleaner and more human-readable equivalent of checking $ENV{AUTOMATED_TESTING} yourself, but may be improved in line
       with best practices at a later date.

   release_testing
       Are we currently running in an release testing environment. That is, are we in the process of running in a potential highly-intensive and
       high dependency bloat testing process prior to packaging a module for release.

       This is primarily a cleaner and more human-readable equivalent of checking $ENV{RELEASE_TESTING} yourself, but may be improved in line with
       best practices at a later date.

   win32
       The "win32" function tests if the Makefile.PL is currently running in a native Microsoft Windows Perl, such as ActivePerl or Strawberry
       Perl.

       This is primarily a cleaner and more human-readable equivalent of checking "$^O eq 'MSWin32'" yourself, but may be improved in line with
       best practices at a later date.

   winlike
       The "winlike" function tests if the Makefile.PL is currently running in a Microsoft Windows Perl, under either cygwin or a native Win32
       Perl.

       This is primarily a cleaner and more human-readable equivalent of checking "$^O eq 'MSWin32' or $^O eq 'cygwin'"yourself, but may be
       improved in line with best practices at a later date.

SEE ALSO

       Module::Install

AUTHORS

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2007 - 2012 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.16.3							    2012-03-01						  Module::Install::With(3)

Shell Programming and Scripting