如果一个用户不止一个登录会话,其用户名显示相同次数 users 在排查服务器的时候,黑客没有在线,可以使用last命令排查黑客什么时间登录的有的黑客登录时,会将/var/log/wtmp文件删除或者清空,这样我们就无法使用last命令获得有用的信息了。在黑客入侵之前,必须使用chattr +a对/var/log/wtmp文件进行锁定,避免被黑客删除 ...
Usage:who [OPTION]... [ FILE | ARG1 ARG2 ] Print information about users who are currently logged in. -a, --all same as -b -d --login -p -r -t -T -u -b, --boot time of last system boot -d, --dead print dead processes -H, --heading print line of column headings --...
$ last | head -5 nemo pts/1 192.168.0.6 Fri Jun 19 12:58 still logged in shs pts/0 192.168.0.6 Fri Jun 19 12:57 still logged in shs pts/0 192.168.0.6 Wed Jun 17 18:10 - 18:42 (00:32) reboot system boot 5.4.0-37-generic Wed Jun 17 17:58 still running shs pts/2 192.16...
adm **Never logged in** lp **Never logged in** sync **Never logged in** shutdown **Never logged in** halt **Never logged in** mail **Never logged in** news **Never logged in** uucp **Never logged in** operator **Never logged in** games **Never logged in** gopher **Never...
命令简介: 该命令用来列出目前与过去登录系统的用户相关信息。指令英文原义:show listing of last logged in users 执行权限 :有些需要特殊权限 指令所在路径:/usr/bin/last 执行last指令时,它会读取位于/var/log目录下名称为wtmp的文件,并把
Never logged in. No mail. No Plan. [root@centos7 ~]#getent passwd wangwang:x:1000:1000:wangxiaochun,it,10000,11111:/home/wang:/bin/bash [root@centos7 ~]#chsh -s /bin/csh wang Changing shell for wang.Shell changed. [root@centos7 ~]#getent passwd wangwang:x:1000:1000:wangsicong,wa...
[root@xgj~]# lastrootpts/0 :0 Mon Aug 24 17:52 still logged inroot:0 :0 Mon Aug 24 17:52 still logged in(unknown:0 :0 Mon Aug 24 17:50 - 17:52 (00:02)rebootsystem boot 3.10.0-123.el7.x Tue Aug 25 01:49 - 18:17 (-7:-32...
The who command has a few options to get other specific information about logged users. Using who command in Linux Here’s the syntax for who command: who [options] [filename] You have already seen what information the who command shows without any options. Let’s now see what options doe...
#users ——>打印出当前登录的用户 root #last ——>往回搜索wtmp来显示自从文件第一次创建以来登录过的用户 root pts/0 192.168.196.128 Fri Oct 26 18:04 still logged in root pts/0 210.38.206.90 Fri Oct 26 12:55 - 13:06 (00:11)
sudo vim /etc/ssh/sshd_config (在里面添加一行 DenyUsers user1 user2) sudo systemctl restart sshd.service (重启sshd 使改动生效) sudo journalctl -xe (查看重启日志) 查看最近用户登录情况 命令 日志文件 功能 last /var/log/wtmp 所有成功登录/登出的历史记录 lastb /var/log/btmp 登录失败尝试 lastlog...