Account Management

[root @ localhost ~] # useradd kgc add a user class workshop

[root @ localhost ~] # tail / etc / passwd View

[root @ localhost ~] # passwd kgc set class factory password

[root @ localhost ~] # vi ~ kgc / .bash_profile text editor initial configuration file

[root @ localhost ~] # vi ~ kgc / .bashrc text editor initial configuration file

[root@localh

[root @ localhost ~] # vi ~ kgc / .bash_logout text editor initial configuration file

oot @ localhost ~] # passwd -d kgc clear the user password

Clear user password kgc.

passwd: Successful operation

[root @ localhost ~] # passwd -l kgc locked account

Kgc lock the user's password.

[root @ localhost ~] # passwd -S kgc see if the user is locked

kgc LK 2019-07-28 0 99999 7 -1 (password is locked.)

[root @ localhost ~] # passwd -u kgc unlock the user

Kgc unlock the user's password.

passwd: Successful operation

[root @ localhost ~] # usermod -l jiaoyue kgc modify the user name

[root@localhost ~]# tail -1 /etc/passwd 查看文件

jiaoyue:x:1002:1003::/home/kgc:/bin/bash

root@localhost ~]# groupadd -g 777 yue 添加组账号

[root@localhost ~]# tail -4 /etc/group 查看文件

group1:x:1001:

jiaoxue:x:1002:tom

kgc:x:1003:

yue:x:777:

[root@localhost ~]# groupdel yue 删除组账号

[root@localhost ~]# tail -5 /etc/group 查看文件

[root@localhost ~]# id jiaoyue 查询用户身份标识

uid=1002(jiaoyue) gid=1003(kgc) 组=1003(kgc) 查询软件包

[root@localhost ~]# rpm -q finger

未安装软件包 finger

[root@localhost ~]# yum -y install finger 安装安装包

[root@localhost ~]# finger jiaoyue 查询账号详细信息

[root@localhost ~]# w jiaoyue 查询登陆到主机的用户信息

[root@localhost ~]# who 查询当前登陆的账号名

[root@localhost ~]# whoami 查询登陆到主机的用户信息

root

[root@localhost ~]# tail /etc/passwd 查看

[root@localhost ~]# passwd kgc 设置课工场密码

[root@localhost ~]# vi ~kgc/.bash_profile 文本编辑器配置初始文件

[root@localhost ~]# vi ~kgc/.bashrc 文本编辑器配置初始文件

[root@localh

[root@localhost ~]# vi ~kgc/.bash_logout 文本编辑器配置初始文件

oot@localhost ~]# passwd -d kgc 清空用户密码

清除用户的密码 kgc。

passwd: 操作成功

[root@localhost ~]# passwd -l kgc 锁定账号

锁定用户 kgc 的密码。

[root@localhost ~]# passwd -S kgc 查看用户是否处于锁定状态

kgc LK 2019-07-28 0 99999 7 -1 (密码已被锁定。)

[root@localhost ~]# passwd -u kgc 解锁用户

解锁用户 kgc 的密码。