1GPASSWD(1)                       User Commands                      GPASSWD(1)
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NAME

6       gpasswd - administer the /etc/group file
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SYNOPSIS

9       gpasswd group
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11       gpasswd -a user group
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13       gpasswd -d user group
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15       gpasswd -R group
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17       gpasswd -r group
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19       gpasswd [-A user,...] [-M user,...] group
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DESCRIPTION

22       gpasswd is used to administer the /etc/group file (and /etc/gshadow
23       file if compiled with SHADOWGRP defined). Every group can have
24       administrators, members and a password. System administrator can use -A
25       option to define group administrator(s) and -M option to define members
26       and has all rights of group administrators and members.
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28   Notes about group passwords
29       Group passwords are an inherent security problem since more than one
30       person is permitted to know the password. However, groups are a useful
31       tool for permitting co-operation between different users.
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OPTIONS

34       Group administrator can add and delete users using -a and -d options
35       respectively. Administrators can use -r option to remove group
36       password. When no password is set only group members can use newgrp to
37       join the group. Option -R disables access via a password to the group
38       through newgrp command (however members will still be able to switch to
39       this group).
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41       gpasswd called by a group administrator with group name only prompts
42       for the group password. If password is set the members can still
43       newgrp(1) without a password, non-members must supply the password.
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FILES

46       /etc/group
47          Group account information.
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49       /etc/gshadow
50          Secure group account information.
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SEE ALSO

53       newgrp(1), gshadow(5), groupadd(8), groupdel(8), groupmod(8), grpck(8),
54       group(5).
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58User Commands                     07/30/2006                        GPASSWD(1)
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