Awesome macOS Command Line
A curated list of shell commands and tools specific to OS X.
Dr. Drang: Paper calendars with pcal
Using the pcal program to generate calendars.
Sakuzaku: I Am Building Ruby, Rails, Subversion, Mongrel, and MySQL on Mac OS X -- Automatically (And So Can You!)
Like it says, a shell script to automatically install the perfect Ruby on Rails development environment on OS X. Useful!