You mean "tmux detach" not just "detach". Also it is prefix+: not just :. Also there is no attach keyboard shortcut,not prefix-a. Not sure why you keep putting

You mean "tmux detach" not just "detach". Also it is prefix+: not just :. Also there is no attach keyboard shortcut,not prefix-a. Not sure why you keep putting tmux in all caps but whatever floats your boat there.