FAQ Does it run under OS X 10.11 (El Capitan)? Not under default configuration. It requires a system tweak, read about it here. How do I uninstall TotalTerminal? You may use Status Menu Icon and select Uninstall TotalTerminal. Alternatively you may download TotalTerminal DMG again and use TotalTerminal Uninstaller which is present there. Alternatively you can launch this command in Terminal.app: o