- Use the screen quit command (normally ctrl-A ctrl-\).
- Use the command mode of screen (normally ctrl-A :) then type
quit orhelp for more commands
This will quit screen and release the TTY serial port connection.
Related: hooking screen to a TTY serial port connection in [WayBack] The woods and trees of OpenSuSE on single-board computers – image abbreviations – and getting it installed using OS X
–jeroen
via:





