Kill lingering ssh logins

Question

I'm connecting to a server via SSH and sometimes it freezes for some minutes, then throws the 'pipe broken' message and returns to my console. When I log in again and do a who, I still see that the user is logged in, and these keep piling up. How do I kill them? I'm logging in as root every time.

Answer 1

In short, just kill the PID of the corresponding SSH session:

Find logged in users and TTYs:

w

05:04:54 up 14 days, 10:32,  2 users,  load average: 0.00, 0.01, 0.05
USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU  WHAT
myuser   pts/0    xxx.xxx.xxx.xxx   04:48    0.00s  0.03s  0.01s sshd: myuser
myuser   pts/1    xxx.xxx.xxx.xxx   05:04    2.00s  0.00s  0.00s -bash

Get matching PID (in this case, matching pts/1):

ps -ef | grep ssh.*pts/1

myuser   11575 11573  0 05:04 ?        00:00:00 sshd: myuser@pts/1
root     11670 11100  0 05:06 pts/0    00:00:00 grep ssh.*pts/1

Terminate process (in this case 11575, above):

sudo kill 11575