Provided by: passwd_184.108.40.206-1ubuntu2_i386
gpasswd - administer the /etc/group file
gpasswd [option] group
The gpasswd command is used to administer the /etc/group file (and
/etc/gshadow file if compiled with SHADOWGRP defined). Every group can
have administrators, members and a password. System administrator can
use the -A option to define group administrator(s) and the -M option to
define members and has all rights of group administrators and members.
gpasswd called by a group administrator with a group name only prompts
for the group password. If a password is set the members can still
newgrp(1) without a password, and non-members must supply the password.
Notes about group passwords
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.
Except for the -A and -M options, the options cannot be combined. The
options which apply to the gpasswd command are:
Add the user to the named group.
Remove the user from the named group.
Remove the password from the named group. Only group members will
be allowed to use newgrp to join the named group.
Restrict the access to the named group. Only group members will be
allowed to use newgrp to join the named group.
Set the list of administrative users.
Set the list of group members.
Informacje o grupach użytkowników.
Informacje chronione o grupach użytkowników.
newgrp(1), gshadow(5), groupadd(8), groupdel(8), groupmod(8), grpck(8),