I use tmux regularly, especially on headless servers to which I am SSHing over an unreliable channel (meaning any given SSH app on my iPad that is likely to tim

I use tmux regularly, especially on headless servers to which I am SSHing over an unreliable channel (meaning any given SSH app on my iPad that is likely to time out if I switch away from it for too long, or the Doctor's assistant calls my name and I have to lock the screen). It's extra useful when I am doing something that takes a long time, like upgrading from Debian 8 to 9 with apt-get, and losing the connection would be a real pain. I used to use GNU screen, but tmux - for me - proved more reliable, and much easier to set up for sharing a screen with a different user to help debug or learn something. The keystroke mappings don't bother me, and as a hard-core command-line user, I totally appreciate the switch from Ctrl-a (aka "go to start of line") to Ctrl-b. Hitting Ctrl-a while trying to edit a command line and nothing - or worse - happening can be super frustrating, and not all term types support Home and End. I also just use a small subset of the commands and use 'Ctrl-b ?' if I forget. So a big thumbs up for tmux from me.