GPASSWD(1) 用户命令 GPASSWD(1)
名称
gpasswd - administer /etc/group and /etc/gshadow
大纲
gpasswd [选项] group
描述
The gpasswd command is used to administer /etc/group, and /etc/gshadow.
Every group can have administrators, members and a password.
System administrators can use the -A option to define group
administrator(s) and the -M option to define members. They have all
rights of group administrators and members.
gpasswd called by a group administrator with a group name only prompts
for the new password of the group.
If a password is set the members can still use newgrp(1) without a
password, and non-members must supply the password.
请注意组密码
Group passwords are an inherent security problem since more than one
person is permitted to know the password. However, groups are a useful
tool for permitting co-operation between different users.
选项
Except for the -A and -M options, the options cannot be combined.
The options which apply to the gpasswd command are:
-a, --add user
Add the user to the named group.
-d, --delete user
Remove the user from the named group.
-h, --help
显示帮助信息并退出。
-Q, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration
files from the CHROOT_DIR directory. Only absolute paths are
supported.
-r, --remove-password
Remove the password from the named group. The group password will
be empty. Only group members will be allowed to use newgrp to join
the named group.
-R, --restrict
Restrict the access to the named group. The group password is set
to "!". Only group members with a password will be allowed to use
newgrp to join the named group.
-A, --administrators user,...
设置有管理权限的用户列表。
-M, --members user,...
设置组成员列表。
CAVEATS
This tool only operates on the /etc/group and /etc/gshadow files. Thus
you cannot change any NIS or LDAP group. This must be performed on the
corresponding server.
配置文件
The following configuration variables in /etc/login.defs change the
behavior of this tool:
文件
/etc/group
组账户信息。
/etc/gshadow
安全组账户信息。
参见
newgrp(1), groupadd(8), groupdel(8), groupmod(8), grpck(8), group(5),
gshadow(5).
shadow-utils 4.13 2023-03-23 GPASSWD(1)
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