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Man Pages


Manual Reference Pages  -  FILTER::SH (3)

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NAME

Filter::sh - sh source filter

CONTENTS

SYNOPSIS



    use Filter::sh command ;



DESCRIPTION

This filter pipes the current source file through the program which corresponds to the command parameter using the Bourne shell.

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::sh command ;



near the top.

Here is an example script which uses the filter:



    use Filter::sh 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.
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perl v5.20.3 FILTER::SH (3) 2015-01-21

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