How to disconnect specific ssh client from ssh server in linux?

Question

I wonder if i can disconnect a specific ssh client from ssh server?

Can we do that?

Thanks in advance...

Seems like a duplicate of unix.stackexchange.com/questions/615/… — user535733, Commented Aug 16, 2020 at 12:03
i already killed the client, but in client, it still connected to the server... — Zozzizzez, Commented Aug 16, 2020 at 14:57

mit · Accepted Answer · 2021-03-16 13:28:11Z

A copy of the steps:

There's probably an easier way, but I do this:

See who's logged into your machine -- use who or w:

 > who  
 mmrozek  tty1         Aug 17 10:03  
 mmrozek  pts/3        Aug 17 10:09 (:pts/2:S.0)

Look up the process ID of the shell their TTY is connected to:

 > ps t  
 PID   TTY      STAT   TIME COMMAND  
 30737 pts/3    Ss     0:00 zsh

Laugh at their impending disconnection (this step is optional, but encouraged)
```
 > echo "HAHAHAHAHAHAHAHA" | write mmrozek pts/3
```
Kill the corresponding process:
```
 > kill -9 30737
```

I just discovered you can combine steps 1 and 2 by giving who the -u flag; the PID is the number off to the right:

> who -u
mmrozek  tty1         Aug 17 10:03 09:01        9250
mmrozek  pts/18       Aug 17 10:09 01:46       19467 (:pts/2:S.0)

1 Answer 1