I'm not sure what has recently changed for this to happen, but at the moment I can't open Terminal or the Nautilus file manager. Xterm was suggested on another forum as a way of checking some fixes, but when I try that, I get 'command not found'.
What's going on?! Thanks.
EDIT: I think this may be because of a Chrome Remote Desktop installation, however I can't find how to uninstall it and reset the configs. My sound is also outputting as Unix FIFO sink/...