Redcar is distributed via Rubygems. Installing it is a single gem install command, plus one more. As Redcar runs on jRuby, it requires Java to be installed.
$ gem install redcar $ redcar install $ redcar
The first command will install the redcar script. This isn't the editor itself, it's just the launcher script. The command redcar install will download the editor itself, this may take a few minutes depending on your Internet connection. Finally, the command redcar will start up the Redcar editor.
If you're using RVM, the commands above won't require sudo. However, if you're using Ruby installed another way on Linux or OS X, they may require sudo.