Using open to connect different processes : Open file « File « Perl

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Perl » File » Open file 
Using open to connect different processes
      


#!/usr/bin/perl


use warnings;
use strict;

openDIR, "dir *.* |" or die"Cannot open dir pipe: $!" );
openMORE, "| more" or die"Cannot open more: $!" );

while <DIR> ) {
   printMORE );
}

closeDIR or die"Cannot close DIR: $!" );
closeMORE or die"Cannot close MORE: $!" );

   
    
    
    
    
    
  
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14.Open command expressions
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22.Open for writing first, then reading
23.Opening an input filter on a Win32 platform
24.Opening files and using file handles: open(filehandle, name);
25.Opens two files and copies one into another.
26.Checks whether an unopened file actually exists.
27.Input Filter: open(FILEHANDLE, COMMAND|);
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