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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\n" ;
       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 v5.26.3                      2017-11-15                   Filter::exec(3)