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    0: #!/usr/bin/perl -w
    1: # rtfm - read the friendly manual/s
    2: #
    3: # Usage: rtfm [number of man pages to read]
    4: #
    5: # Originally written by Daniel N. Andersen, June 2004
    6: # Modified by just about everyone at perlmonks.org
    7: 
    8: use strict;
    9: 
    10: my $lines = 0;
    11: my $loop  = 1;
    12: my $select;
    13: 
    14: if($ARGV[0])
    15: {
    16:     $loop = $ARGV[0] unless($ARGV[0] =~ /\D/);
    17: }
    18: 
    19: while($loop)
    20: {
    21:     foreach my $path (split(/:/, $ENV{'PATH'}))
    22:     {
    23:         opendir(PATH, $path);
    24:         while(defined($_ = readdir(PATH)))
    25:         {
    26:             if(-f "$path/$_")
    27:             {
    28:                 $lines++;
    29:                 $select = $_ if int(rand($lines)) == 0;
    30:             }
    31:         }
    32:         closedir(PATH);
    33:     }
    34:     system(man => $select);
    35:     $lines = 0;
    36:     $loop--;
    37: }

In reply to rtfm by dna

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