I have tried to find the command line option for opening Opera in app mode (new window, no address bar, no menus, no tabs etc.) on Linux (Ubuntu). I have managed to open Opera from the command line in a new window with opera --new-window. I have tried a few of the switches here http://peter.sh/experiments/chromium-command-line-switches/ and here http://www.opera.com/docs/switches/ but with new luck. Any suggestions?