Linux如何殺掉tty終端

今天工做中遇到了同事的終端登錄不上去的問題，嘗試着如何解決，首先想到的就是先幹掉tty終端。

下面是總結的如何殺掉tty終端：

1.使用w命令查看當前登錄的用戶及使用的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 命令能夠獲得終端的進程號

[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

能夠將進程殺掉，以關閉終端。前提：kill命令的執行者必須是超級用戶或對tty1的進程有操做權限，不然，命令會報錯：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).