I followed the steps documented on http://wiki.github.com/Caged/gitnub/installing-or-building-gitnub under ‘installing from the distribution’:
- Launch Terminal.app.
gem install open4
- Copy the
(or somewhere else in your path).
However, when I navigate to a git repository and enter the
nub command, the GitNub icon appears in my Dock for a second, and then silently disappears.