GROUPMEMS
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SETUP
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大纲
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groupmems −a user_name | −d user_name | [−g group_name] | −l | −p |
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The groupmems command allows a user to administer their own group membership list without the requirement of superuser privileges. The groupmems utility is for systems that configure its users to be in their own name sake primary group (i.e., guest / guest).
Only the superuser, as administrator, can use groupmems to alter the memberships of other groups.
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−a, −−add user_name
Add a user to the group membership list.
If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
−d, −−delete user_name
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If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
−g, −−group group_name
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−h, −−help
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−l, −−list
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−p, −−purge
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If the /etc/gshadow file exist, and the group has no entry in the /etc/gshadow file, a new entry will be created.
−R, −−root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.
SETUP
The groupmems executable should be in mode 2770 as user root and in group groups. The system administrator can add users to group groups to allow or disallow them using the groupmems utility to manage their own group membership list.
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$ groupadd −r groups |
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$ chmod 2770 groupmems |
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$ chown root.groups groupmems |
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$ groupmems −g groups −a gk4 |
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/etc/group
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/etc/gshadow
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chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8).