One advantage of
screen is that it is a default package on most Unixy systems. Thus if you logged into a remote server you are more likely to have
screen available for use than
This is why it is worth learning basics of
Screen window splitting - https://tomlee.co/2011/10/gnu-screen-splitting/
tmux a shell has to be spawned explicitly after splitting.
To do a vertical split -
Ctrl+a | then
Ctrl+TAB to go to the other
split. Then as usual, use
Ctrl+a c to create a window.
For a horizontal split use