Feb 14, 2013 Good online linux terminal? I'm not always at mu Ubuntu laptop, and sometimes I want to mess around with the command line when I am away from my Ubuntu PC. Anyone know of any good, fully-interactive, online Linux command line I can use? Aug 06, 2018 Copy.sh is an efficient online Linux terminal with the ability to emulate other OSes including FreeDOS, Solar OS, Windows 98, and Windows 1.01. When you first load the emulator, you have the option to choose your desired OS and customize it to suit your requirements.