Kill all detached screen sessions

Question

When I execute screen -ls, I see the following. How can I kill all the detached sessions?

There are screens on:

    84918.tty         


        

Answer 1

Include this function in your .bash_profile:

killd () {
    for session in $(screen -ls | grep -o '[0-9]\{4\}')
    do
        screen -S "${session}" -X quit;
    done
}

To run it, call killd. This will kill all screen sessions, detached or not.