$ tmux
CTRL+B C -> create new pane
CTRL+B [num] -> go to a pane
CTRL+D -> finish bash session, closes the pane. Closing all panes will destroy the window and thus the tmux
CTRL+B x -> close pane (in case bash got stalled).
CTRL+B , -> rename a pane
CTRL+B D -> detach from the tmux (the tmux --all windows-- is still alive)
CTRL+B ALTGR+[ -> Enter "copy" mode. Move up/down in the window with cursors or PgUp/PgDown. Press q to quit copy mode.
$ tmux at -> reattach to the previous tmux
$ tmux ls -> list all tmux sessions