Short and simple...I borrowed the counting code from ActiveState's Perl docs and added some to make this accessible from the command line.
#Count number of lines in a file
$filename = <@ARGV>;
 $lines = 0;
    open(FILE, $filename) or die "Can't open `$filename': $!";
    while (sysread FILE, $buffer, 4096) {
        $lines += ($buffer =~ tr/\n//);
    }
    close FILE;
print "The number of lines in $filename is $lines.\n";

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In reply to Count number of lines in a text file by Scott7477

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