Linux如何杀掉tty终端

今天工做中遇到了同事的终端登录不上去的问题，尝试着如何解决，首先想到的就是先干掉tty终端。

下面是总结的如何杀掉tty终端：

1.使用w命令查看当前登录的用户及使用的tty

[root@host ~]# w -s

10:16:19 up 12 days, 23:47, 25 users, load average: 6.71, 10.24, 12.16

USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT

root pts/0 :4 Thu08 4days 0.08s 0.08s bash

eric pts/1 :6 18Jul18 11days 0.03s 0.03s /bin/bash

evan pts/2 :11 Wed13 4days 25:43 25.22s /usr/libexec/gn

wang pts/3 :22 24Jul18 6days 1:13m 2.31s /usr/libexec/gn

mark pts/5 :9 09:57 19:15 3:22 2:57 /usr/bin/java -

john pts/6 :14 Thu16 3days 16:48m 11:09 /bin/java -Dosg

2.用ps -t 命令能够获得终端的进程号

[root@host system]# ps -t /dev/pts/2

PID TTY TIME CMD

15272 pts/2 00:00:00 bash

16970 pts/2 00:00:00 eclipse

16971 pts/2 00:26:00 java

三、用kill -9命令

能够将进程杀掉，以关闭终端。前提：kill命令的执行者必须是超级用户或对tty1的进程有操做权限，不然，命令会报错：Operation not permitted，如：

[root@host ~]# kill -9 15272

[root@host ~]# ps -t /dev/pts/2

PID TTY TIME CMD

9565 pts/2 00:00:00 bash

[root@host ~]# kill -9 15272

[root@host ~]# ps -t /dev/pts/2

error: TTY could not be found

Usage:

ps [options]

Try 'ps --help <simple|list|output|threads|misc|all>'

or 'ps --help <s|l|o|t|m|a>'

for additional help text.

For more details see ps(1).