Linux commands (132) - groupadd command

1. Introduction command

groupadd command is a command system administrator to create a new group.

groupadd command creates a new group account using the values ​​specified on the command line and the default values ​​in the system. The new group will be added to the system files as needed.

2. Command Format

groupadd [OPTIONS] GROUP

3. Common Options

  -f, --force
  	如果组已经存在则成功退出并且如果 GID 已经存在则取消 -g
  -g, --gid GID
  	为新组使用 GID
  -h, --help
  	显示帮助信息并推出
  -K, --key KEY=VALUE
  	不使用 /etc/login.defs 中的默认值
  -o, --non-unique
  	允许创建有重复 GID 的组
  -p, --password PASSWORD
  	为新组使用加密过的密码
  -r, --system
  	创建一个系统组

Reference Example 4

(1) Add a user group.

groupadd  g1

(2) add a specified user group and GID.

groupadd -g 888 g2

(3) using the -r Create a system working group.

groupadd -r -g 889 g3

(4) allows the creation of duplicate GID of the group.

groupadd -o -r -g 889 g4

#查看新创建的用户组
tail -n 3 /etc/group
g2:x:888:
g3:x:889:
g4:x:889:

(5) using the encrypted password for the new group.

groupadd -p $6$6B3fQyRr$DWk9/i2ly/8IFNA8lNReCAve6eODSGuvOD2Y2q/NGZXGgaQ9j/APs0TpA3b5nPg2VcuDyHVCz.d8zpeJYJar./ g5

5. Related Documents

/etc/group		#群组信息
/etc/gshadow	#群组加密信息

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references

[. 1] the groupadd (. 8) Manual
[2] . [Linux] CSDN step by step to learn Linux - groupadd command (87)