Here’s a problem: you need to look at a gem’s source code to figure out something, but you need to figure out the path to your gems directory, find the gem in question, and then open it from there. What a pain. Luckily, Dr. Nic has saved the day:

$ sudo gem install find_gem
$ find_gem activerecord

This also comes with the wonderful command ‘edit_gem’. Make sure you have your environment EDITOR variable set in your .bash_login|.bash_profile|.bashrc:

export EDITOR="mate"

$ source .bash_login (or .bash_profile or .bashrc)

Now, “edit_gem activerecord” does what you think it should do. Nice little pieces of functionality like these really make the term “gem” so appropriate. Hat-tip to Graham Ashton for sparking my interest to find a solution.

Tonight, I’ll be doing a Lightning Talk for the Atlanta Ruby Users Group on Thin, a Ruby web server. Below are my slides, accompanied by several resources:

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• Thin on GitHub
• Rails Development with Thin
• Using Capistrano with Thin
• Using god with Thin
• Thin and Mongrel Performance Test

Thin is in!