Lets you enter the name of a JavaScript library on the command-line, and prints out the library's contents, having fetched it from cdnjs.com. `cdnjs backbone.js`, for example, or `cdnjs jquery > jquery.js` to save it.

cdnjs

#! /usr/bin/env perl

# A simple command-line utility for finding and retrieving JavaScript libraries
# from cdnjs.com

use strict;
use warnings;
use LWP::Simple;
my $lib = shift or die "No script entered on the command-line!";

get("http://cdnjs.com") =~ m#<tr[^>]+data-library-name="$lib"[^>]*>.*?<p[^>]+itemprop="downloadUrl"[^>]+>([^<]+)#;
die "Failed to find $lib at cdnjs.com - are you sure the name is right?" unless $1;
my $url = "http:$1";
my $script = get($url);
print $script;