Kicking out illegal Linux users

Illegal to add users and illegal to enter the remote operation of users!

01. Illegal User Intrusion System

The simplest way is to check with the W command.

If an illegal user is confirmed to be present within the system, the user-related process can be immediately kill.

kill-9 ' Lsof-u xxx ' # # #杀掉非法用户所启动的进程
userdel-r XXX # # #删除非法用户xxx及其主目录

1. First use the W command to view the user's TTY number, then use the
skill-kill-t pts/1(or display pts/*) #踢出用户-kill can be replaced with signal-9

2. Or first use the W command to view the online users, and then:
pkill-kill-t TTY #如pkill-kill-t PTS/1

Kicking out illegal Linux users