用户和用户组的基本管理命令

一 实战

[root@localhost ~]# groupadd sexy

[root@localhost ~]# groupmod -n market sexy

[root@localhost ~]# groupmod -g 668 market

[root@localhost ~]# groupadd -g 888 boss

[root@localhost ~]# groupdel market

[root@localhost ~]# groupadd sexy

[root@localhost ~]# useradd -g sexy sdf

[root@localhost ~]# useradd -g sexy jzmb

[root@localhost ~]# useradd -d /home/xxx test

[root@localhost ~]# cat /etc/passwd

[root@localhost ~]# usermod -c dgdzmx sdf

[root@localhost ~]# usermod -l cls sdf

[root@localhost ~]# usermod -d /home/cls cls

[root@localhost ~]# usermod -g sexy test

[root@localhost ~]# userdel jzmb

[root@localhost ~]# touch /etc/nologin

[root@localhost ~]# passwd -ls cls

passwd: bad argument -ls: unknown option

[root@localhost ~]# passwd -l cls

Locking password for user cls.

passwd: Success

[root@localhost ~]# passwd -u cls

Unlocking password for user cls.

passwd: Warning: unlocked password would be empty.

passwd: Unsafe operation (use -f to force)

[root@localhost ~]# passwd -d cls

Removing password for user cls.

passwd: Success

 

二 主要组合附属组

 

 

三 实战

[root@localhost ~]# gpasswd -a cls boss

Adding user cls to group boss

[root@localhost ~]# newgrp boss

[root@localhost ~]# gpasswd -d cls boss

Removing user cls from group boss

[root@localhost ~]# useradd -g group1 -G group2

[root@localhost ~]# gpasswd test

Changing the password for group test

New Password:

Re-enter new password:

 

四 其他管理命令

[root@localhost ~]# su cakin24

[cakin24@localhost root]$ su root

Password:

[root@localhost ~]# whoami

root

[root@localhost ~]# id root

uid=0(root) gid=0(root) groups=0(root)

[root@localhost ~]# id cakin24

uid=1000(cakin24) gid=1000(cakin24) groups=1000(cakin24)

[root@localhost ~]# chfn cakin24

Changing finger information for cakin24.

Name [cakin24]: cakin24

Office []: cakin

Office Phone []: cakin

Home Phone []: cakin

 

Finger information changed.