linux下使用root强制注销其他用户和终端会话tty

最新推荐文章于 2024-01-10 11:38:39 发布

转载最新推荐文章于 2024-01-10 11:38:39 发布 · 2.1k 阅读

本文介绍如何通过skill命令来注销指定tty上的用户会话或某个用户的全部会话。skill命令提供了灵活的方式，允许管理员根据终端、用户名、进程ID或命令名选择目标进程，并发送信号来结束进程。文章举例说明了如何对特定tty上的进程发送KILL信号。

出处：http://blog.chinaunix.net/uid-12115233-id-390539.html

需求：
假设w输出类似这样
user1   pts/0    ...................... -bash
user1    pts/1    ...................... -bash
user2    pts/2   ...................... -bash
user2    pts/3    ...................... w

有没有命令对指定的tty注销用户？又有没有命令对指定的用户注销所有tty？

总感觉用ps kill -9 太暴力了点，也不方便......

其实可以通过skill命令来实现:
# skill
Usage: skill [signal to send] [options] process selection criteria
Example: skill -KILL -v pts/*

The default signal is TERM. Use -l or -L to list available signals.
Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.
Alternate signals may be specified in three ways: -SIGKILL -KILL -9

General options:
-f fast mode            This is not currently useful.
-i interactive use      You will be asked to approve each action.
-v verbose output       Display information about selected processes.
-w warnings enabled     This is not currently useful.
-n no action            This only displays the process ID.

Selection criteria can be: terminal, user, pid, command.
The options below may be used to ensure correct interpretation.
-t The next argument is a terminal (tty or pty).
-u The next argument is a username.
-p The next argument is a process ID number.
-c The next argument is a command name.
-t 这个参数可以多利用