linux screen keyboard shortcuts

screen is a much under utilised program, which provides the following functionality:

Remote terminal session management (detaching or sharing terminal sessions)

unlimited windows (unlike the hardcoded number of Linux virtual consoles)

scrollback buffer (not limited to video memory like Linux virtual consoles)

copy/paste between windows

notification of either activity or inactivity in a window

split terminal (horizontally and vertically) into multiple regions

locking other users out of terminal

See also my screen settings

See also the tmux alternative

See also the byobu screen config manager.
See also the reptyr as another way to reattach programs to a terminal.

Note for nested screen sessions, use "Ctrl+a a" to send commands to the inner screen,
and the standard "Ctrl+a" to send commands to the outer screen.