Tmux

tmux instructions

open new window (horizontal)
Ctrl-b “

open new window (verticle)
Ctrl-b %

To switch to the next pane (panes are numbered left-to-right, top-down):
Ctrl-b o

To create a new window:
Ctrl-b c

To move to the next window in the index:
Ctrl-b n

To move backwards in the index:
Ctrl-b p

To detach from a session:
Ctrl-b d

To re-attach to a session:
tmux attach -t [session name]

Sessions, like windows, are numbered beginning from 0. If you forgot which session you wanted to attach to, you can view active sessions:
tmux list-sessions

A list of all command keys is accessible with:
Ctrl-b ?