Krdytkyu

I'm trying to kill a screen session. I noticed a lot of other related questions, but none of those answers are working for me. I am trying to kill the following session:

screen -ls

There is a screen on:

    23520.pts-6.porkypig    (09/30/2013 02:49:47 PM)    (Detached)

1 Socket in /var/run/screen/S-root.



screen -r 23520.pts-6.porkypig

Now I am in the session. According to the documentation:

http://www.gnu.org/software/screen/manual/screen.html#Quit

I am supposed to press "control a" and then "control ". I do that and nothing happens.

Another solution said to press Ctrl+a and type :quit. However, again it doesn't do anything. In fact, pressing control+a, absolutely nothing happens afterwards except a message "No Other Window"

first you need to re attach to the screen session
screen -r 23520 as you have done. Then press ctrl + a and then a capital K and press y when it asks if you really want to kill the session

You can quit that screen without attaching to it. First, find its session:

$ screen -ls

and then quit it:

$ screen -XS [session # you want to quit] quit

This will kill all the detached screens:

screen -ls | grep detached | cut -d. -f1 | awk '{print $1}' | xargs kill

This will kill all screens, attached or detached

screen -ls | grep pts | cut -d. -f1 | awk '{print $1}' | xargs kill

So with all those official suggestions, lets just go for something easier, and just as effective, and kind of more straight forward.

pkill screen

Who wants to go into an unknown and un-needed screen just to press in a couple commands that most might barely remember? This avoids going into it at all, and kills it straight off.

Plus, if you have more than one, this will take them all in one fell swoop.

I encountered this problem when updating screen. The screen command would hang when attempting to reattach the session, regardless of how many -D or -R I added to the command. However, screen -ls conveniently provides the pid of the session, allowing you to intervene using the following:

10:42 user ~ $ screen -ls

There is a screen on:

        5730.my_screen     (Detached)

1 Socket in /tmp/screens/S-user.



10:42 user ~ $ sudo kill 5730



10:43 user ~ $ screen -ls

No Sockets found in /tmp/screens/S-user.

(This is similar to Brian Thomas's answer, but his will kill all running screen sessions, which may not be what you want if you have multiple screens open but only one misbehaving.)

Like you, I wanted to kill my screen session and found the documentation unhelpful. Convinced that there must be a keyboard shortcut, I found that
ctrl + a then

works

I then get the prompt:
"Really quit and kill all your windows [yn]"

I am not sure why the documentation says ctrl + a then ctrl + . That doesn't do anything for me.