git clone git://github.com/simonask/grabscreen.rb.app.git grabscreen.rb.app
Put the app in the Dock. Click it to initiate grab. Default mode is capture a rectangle, press spacebar to switch to entire window mode.
If growlnotify is installed, grabscreen.rb will notify you when the screenshot was uploaded, or if upload failed.
Press ESC to abort grab operation.
For now, grabscreen.rb requires the 'json' gem to be installed.
NOTE: If you have MacPorts installed, grabscreen.rb will still use the Ruby interpreter provided by Mac OS X, and therefore also the RubyGems installation provided by the system. You will most likely have to run "sudo /usr/bin/gem install json" before it will work.