screen -X -S [session # you want to kill] quit
例如:
[root@localhost ~]# screen -ls
There are screens on:
9975.pts-0.localhost (Detached)
4588.pts-3.localhost (Detached)
2 Sockets in /var/run/screen/S-root.
[root@localhost ~]# screen -X -S 4588 quit
[root@localhost ~]# screen -ls
There is a screen on:
9975.pts-0.localhost (Detached)
1 Socket in /var/run/screen/S-root.
可以看到，4588会话已经没有了。
参考资料：
（1）Kill detached screen session