filter::exec(3) [centos man page]

Filter::exec(3) 					User Contributed Perl Documentation					   Filter::exec(3)

NAME

       Filter::exec - exec source filter

SYNOPSIS

	   use Filter::exec qw(command parameters) ;

DESCRIPTION

       This filter pipes the current source file through the program which corresponds to the "command" parameter.

       As with all source filters its scope is limited to the current source file only. Every file you want to be processed by the filter must
       have a

	   use Filter::exec qw(command ) ;

       near the top.

       Here is an example script which uses the filter:

	   use Filter::exec qw(tr XYZ PQR) ;
	   $a = 1 ;
	   print "XYZ a = $a
" ;

       And here is what it will output:

	   PQR = 1

WARNING

       You should be very careful when using this filter. Because of the way the filter is implemented it is possible to end up with deadlock.

       Be especially careful when stacking multiple instances of the filter in a single source file.

AUTHOR

       Paul Marquess

DATE

       11th December 1995.

perl v5.16.3							    2013-03-29							   Filter::exec(3)

PAR::Filter(3)						User Contributed Perl Documentation					    PAR::Filter(3)

NAME

       PAR::Filter - Input filter for PAR

SYNOPSIS

	   $code = 'use strict; print "Hello, World!
";';
	   $ref = PAR::Filter->new('PodStrip', 'Bleach')->apply($code);
	   print $code;    # pod-stripped and obfuscated code
	   print $$ref;    # same thing

	   $ref = PAR::Filter->new('PodStrip', 'Bleach')->apply('file.pl');
	   print $$ref;    # same thing, applied to file.pl

DESCRIPTION

       Starting with PAR 0.76, "pp -f" takes a filter name, like "Bleach", and invokes this module to transform the programs with
       PAR::Filter::Bleach.  Similarily, "pp -F Bleach" applies the Bleach filter to all included modules.

       It is possible to pass in multiple such filters, which are applied in turn.

       The output of each such filter is expected be semantically equivalent to the input, although possibly obfuscated.

       The default list of filters include:

       o   PAR::Filter::Bleach

	   The archetypical obfuscating filter.

       o   PAR::Filter::Obfuscate

	   Use B::Deobfuscate to strip away indents and comments, as well as mangling variable names.

       o   PAR::Filter::PatchContent

	   Fix PAR-incompatible modules, applied to modules by default.

       o   PAR::Filter::PodStrip

	   Strip away POD sections, applied to modules by default.

       o   PAR::Filter::Bytecode

	   Use B::Bytecode to strip away indents and comments.	This filter is deprecated! For source hiding, have a look at PAR::Filter::Crypto
	   instead and make sure to read about its caveats.

AUTHORS

       Audrey Tang <cpan@audreyt.org>

COPYRIGHT

       Copyright 2003-2009 by Audrey Tang <cpan@audreyt.org>.

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

       See <http://www.perl.com/perl/misc/Artistic.html>

perl v5.18.2							    2012-01-06							    PAR::Filter(3)