TMUX
TMUX is a terminal multiplexer which allows you to have quick access to multiple terminal windows.
All commands in tmux are triggered by a prefix key followed by a command key (similar to emacs). By default, tmux uses C-b as prefix key. This notation might read a little weird if you're not used to it. In this emacs notation C- means "press and hold the Ctrl key". Thus C-b simply means press the Ctrl and b keys at the same time. src
Cheat sheet
Starting/Restarting TMUX
To start tmux: tmux
To start tmux with a named session: tmux new -s mysession
To attach to an existing session: tmux ls then tmux attach -t {session id (number, or name if provided)}
Rename existing session: tmux rename-session -t {old session id (number or name if provided)} {new session name}
Pane/Tile Management
Split left and right: C-b %
Split vertically: C-b "
Change selected pane: C-b <arrow key>
Close currently selected pane: C-d or type exit
Make pane full sized (same command to shrink again): C-b z
Resize pane in direction: C-b C-<arrow ey>
Exiting TMUX
You can exit tmux by exiting all the panes inside
You can exit tmux (and leave session running in background) by detaching.
Detach from current session: C-b d
Detach from sessions (prompt): C-b D
Resource: https://www.hamvocke.com/blog/a-quick-and-easy-guide-to-tmux/