1、查 message
cat /var/log/message
cat /var/log/message.1
cat /var/log/message.2
cat /var/log/message.3
cat /var/log/message.4
2、查 secure
cat /var/log/secure
cat /var/log/secure.1
cat /var/log/secure.2
cat /var/log/secure.3
cat /var/log/secure.4
3、查history命令历史
history
4、查lastlog
lastlog
5、查看失败用户登录记录
lastb
8、查询显示当前用户的IP信息
who -m
注:如有不对的地方,请私信我及时更正,谢谢!