
Customizing IRB, 2010 edition. IRB customization with wirble, hirb, awesome_print and a few others choice libraries. What makes Iain’s .irbrc so awesome is the way it handles loading of dependencies (which may or may not be available).
A few git tips you didn’t know about. Guaranteed to make you a Git Ninja, or at the very least, much more productive with the command line.
Terminal Tips and Tricks For Mac OS X. Just what it says on the label.
Upstart — event-based init daemon. The new alternative to sysvinit. Not so new chronologically, but probably new to you. If you’ve using God or Nagios, consider upstarting some of that.
Awesome Screenshot: Capture & Annotate. This extension (Chrome only) makes screen capture and sharing so easy.
Incidentally, screenshot of the New revised release calendar.