Help for this page
#!/usr/bin/perl -wT use strict; ... }; print "length = $length\n"; # "length = 331" on my machine
($string =~ /\d+/g)[0];
my $length = (`wc -l $filename` =~ /\d+/g)[0]; # get output of wc die "wc error $?" if $?; # die if wc chokes for some reason