Linux Add User To Group
2009-02-11 22:01
232 查看
OriginPage:http://www.cyberciti.biz/faq/howto-linux-add-user-to-group/
Q. How can I add a user to a group under Linux operating system?
A. You can use useradd or
usermod commands to add a user to a group. useradd command creates a
new user or update default new user information. usermod command
modifies a user account i.e. it is useful to add user to existing
group. There are two types of group. First is primary user group and
other is secondary group. All user account related information is
stored in /etc/passwd, /etc/shadow and /etc/group files to store user information.
new group and then add user). If group does not exist, create it.
Syntax:
Create a new user called vivek and add it to group called developers.
First login as a root user (make sure group developers exists), enter:
Output:
If you do not see any output then you need to add group developers using groupadd command:
Next, add a user called vivek to group developers:
Setup password for user vivek:
Ensure that user added properly to group developers:
Please note that capital G (-G) option add user to a list of
supplementary groups. Each group is separated from the next by a comma,
with no intervening whitespace. For example, add user jerry to groups
admins, ftp, www, and developers, enter:
uid=1123(tony) gid=1124(developers) groups=1124(developers)
Please note that small -g option add user to initial login group
(primary group). The group name must exist. A group number must refer
to an already existing group.
usermod command using -a option ~ i.e. add the user to the supplemental
group(s). Use only with -G option :
----------------------------------------------------------------------
因为F10下装Oracle10,想加入现有用户到启动组,所以参用如下命令:
usermod -a -G oinstall gorey
-----------------以上---------------------------------
Q. How can I add a user to a group under Linux operating system?
A. You can use useradd or
usermod commands to add a user to a group. useradd command creates a
new user or update default new user information. usermod command
modifies a user account i.e. it is useful to add user to existing
group. There are two types of group. First is primary user group and
other is secondary group. All user account related information is
stored in /etc/passwd, /etc/shadow and /etc/group files to store user information.
useradd example - Add a new user to secondary group
Use useradd command to add new users to existing group (or create anew group and then add user). If group does not exist, create it.
Syntax:
useradd -G {group-name} username
Create a new user called vivek and add it to group called developers.
First login as a root user (make sure group developers exists), enter:
# grep developers /etc/group
Output:
developers:x:1124:
If you do not see any output then you need to add group developers using groupadd command:
# groupadd developers
Next, add a user called vivek to group developers:
# useradd -G developers vivek
Setup password for user vivek:
# passwd vivek
Ensure that user added properly to group developers:
# id vivekOutput:
uid=1122(vivek) gid=1125(vivek) groups=1125(vivek),1124(developers)
Please note that capital G (-G) option add user to a list of
supplementary groups. Each group is separated from the next by a comma,
with no intervening whitespace. For example, add user jerry to groups
admins, ftp, www, and developers, enter:
# useradd -G admins,ftp,www,developers jerry
useradd example - Add a new user to primary group
To add a user tony to group developers use following command:# useradd -g developers tony # id tony
uid=1123(tony) gid=1124(developers) groups=1124(developers)
Please note that small -g option add user to initial login group
(primary group). The group name must exist. A group number must refer
to an already existing group.
usermod example - Add a existing user to existing group
Add existing user tony to ftp supplementary/secondary group withusermod command using -a option ~ i.e. add the user to the supplemental
group(s). Use only with -G option :
# usermod -a -G ftp tonyChange existing user tony primary group to www:
# usermod -g www tony
----------------------------------------------------------------------
因为F10下装Oracle10,想加入现有用户到启动组,所以参用如下命令:
usermod -a -G oinstall gorey
-----------------以上---------------------------------
相关文章推荐
- Howto: Linux Add User To Group -- 再次无语国内转帖抄袭之风
- Howto: Linux Add User To Group
- Howto: Linux Add User To Group (tips)
- [Linux]--add user to sudo group
- Howto: Linux Add User To Group
- How to add a new user in linux and add it to a new group
- How can I add a user to a group under Linux operating system?
- How to add a user to a group
- Linux新建用户 useradd&groupadd
- SarePoint Powershell Add user to Group
- linux groupadd useradd chmod
- Add a User to a Group (or Second Group) on Linux
- linux之用户管理(useradd/usermod/userdel/groupadd/groupmod/groupdel)
- Visual Studio Emulator报错:Unable to add user to the Hyper-V Administrators group exit code 2220 的解决方法
- linux 和windows 文件互传 用户和用户组的配制文件 useradd groupadd usermod passwd
- [Linux]---Add a new user to sudo group
- Add user to group from command line (CMD)
- add user to group
- Ubuntu14.04利用samba实现Linuxwindows共享出现Failed to add entry for user linux.问题的解决方案
- 【Linux】基础每日一命之useradd&groupadd