Bro – get concise examples for command line programs

This is quite old, but it's just a great utility that doesn't get as much love as it deserves.

It lets you type "bro awk" and get a list of examples of how to use the "awk" command, for example, which you can then upvote or downvote if you find them useful.

You can use it as a web pages using the submitted link, or as a search engine by adding a custom search string to chrome:

> http://bropages.org/%s

with the "bro" search keyword.

You can also install it as a ruby gem, and use it at the command line (which is my preferred use case) which lets you type "bro tar" (or whatever) directly into bash.

I'm sure there are other examples of similar functionality. What is your favorite alternative?