Ubuntu - tmux - Cheatsheet - Pane

Command	Action
break-pane	Break a pane from an existing into a new window.
capture-pane	Capture the contents of a pane to a buffer.
display-panes	Display an indicator for each visible pane.
join-pane	Split a pane and move an existing one into the new space.
kill-pane	Destroy a given pane.
last-pane	Select the previously selected pane.
list-panes	List panes of a window.
move-pane	Move a pane into a new space.
pipe-pane	Pipe output from a pane to a shell command.
resize-pane	Resize a pane.
respawn-pane	Reuse a pane in which a command has exited.
select-pane	Make a pane the active one in the window.
swap-pane	Swap two panes.