Bildschirm töten alle
killall screen
Doubtful Duck
killall screen
screen -X -S enter_screen_id_here kill
$ screen -X -S [session # you want to kill] quit
$ screen -X -S [session # you want to kill] quit
screen -X -S [session # you want to kill] kill
screen -ls
screen -XS [screen sessionid] quit
#eg: screen -XS 20411 quit