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lgroupmod(8) [debian man page]

lgroupmod(8)						      System Manager's Manual						      lgroupmod(8)

NAME
lgroupmod - Modify an user group SYNOPSIS
lgroupmod [OPTION]... group DESCRIPTION
Modifies the user group with name group. OPTIONS
-A, --admin-add=list Add users in comma-separated list among group's administrators. -a, --admin-remove=list Remove users in comma-separated list from group's administrators. Removing users that are not currently among group's administra- tors silently succeeds. -g, --gid=gid Change group's group ID to gid. -i, --interactive Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration. -L, --lock Lock group. This prevents users from using the group password with newgrp(1) to become a member of group. -M, --member-add=list Add users in comma-separated list among group's members. -m, --member-remove=list Remove users in comma-separated list from group's members. Removing users that are not currently among group's members silently succeeds. -n, --name=name Rename group to name. -P, --plainpassword=password Set group's password to password. Note that the password can be viewed while running lgroupmod using tools such as ps(1). -p, --password=encrypted Set group's password to the password represented by the hash encrypted. Note that the hash can be viewed while running lgroupmod using tools such as ps(1). -U, --unlock Unlock group. EXIT STATUS
The exit status is 0 on success, nonzero on error. libuser Jan 11 2005 lgroupmod(8)

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GSHADOW(5)                                                 File Formats and Conversions                                                 GSHADOW(5)

NAME
gshadow - shadowed group file DESCRIPTION
/etc/gshadow contains the shadowed information for group accounts. This file must not be readable by regular users if password security is to be maintained. Each line of this file contains the following colon-separated fields: group name It must be a valid group name, which exist on the system. encrypted password Refer to crypt(3) for details on how this string is interpreted. If the password field contains some string that is not a valid result of crypt(3), for instance ! or *, users will not be able to use a unix password to access the group (but group members do not need the password). The password is used when a user who is not a member of the group wants to gain the permissions of this group (see newgrp(1)). This field may be empty, in which case only the group members can gain the group permissions. A password field which starts with an exclamation mark means that the password is locked. The remaining characters on the line represent the password field before the password was locked. This password supersedes any password specified in /etc/group. administrators It must be a comma-separated list of user names. Administrators can change the password or the members of the group. Administrators also have the same permissions as the members (see below). members It must be a comma-separated list of user names. Members can access the group without being prompted for a password. You should use the same list of users as in /etc/group. FILES
/etc/group Group account information. /etc/gshadow Secure group account information. SEE ALSO
gpasswd(5), group(5), grpck(8), grpconv(8), newgrp(1). shadow-utils 4.5 01/25/2018 GSHADOW(5)

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