Cli-Calc is yet another command-line screen scraper for the Google Calculator, this time written in Ruby for variety's sake.
You can pass it an argument to evaluate or invoke it with no arguments and enter an interactive mode that's sort of like bc. In interactive mode, the script will evaluate the expression each time you press Return and assign the results to a variable that you can use later. You can name the variables yourself if you'd like, as well as save and restore sets of variables from a file.
It respects the http_proxy environment variable, so you can use it at work. Also, if you have the Ruby bindings for GNU Readline installed, you get command editing, history, and autocompletion.
