you can use Tie::File and treat the file as an array, and take an array slice: 
use Tie::File;
use Fcntl 'O_RDONLY';
my @array;
my $filename = '/etc/passwd';
tie @array, 'Tie::File', $filename, mode=>O_RDONLY or die;

open NUMS, "line_num_file" or die;
my @line_nums = map { s/\s+$//s; $_ } <NUMS>;
close NUMS;

my @lines = @array[ @line_numes ];

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In reply to Re: Printing specific line numbers by davidrw
in thread Printing specific line numbers by tsk1979

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