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  1. or download this
    #!/usr/bin/perl
    # PROGRAM "A"
    ...
    system( "find / -ls > /tmp/junk.find 2>&1" ); # this takes a while
    
    __END__
    
  2. or download this
    system( "find / -ls > /tmp/junk.find 2>&1 &" );
    
  3. or download this
    open( C, "process_C |");