04-18-2009
user & groups
1 - what is the maximum no: of groups a user can be a part of ?
2 - what is maximum no: of users a group can contain ?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Is it possible to dynamically allocate a new user group to an existing session on Solaris 5.8
I'd like to be able to allow certain users to access a set of scripts for the life of session (preferably there own session not a specific login created for the purpose) by dynamically giving the session... (0 Replies)
Discussion started by: hammer
0 Replies
2. Shell Programming and Scripting
Hi
As the title descibes I wish to create an excel spreadsheet which lists all directories in full allong with the users, groups and rights.
I have not used Perl scripts before so I'm a little lost on this on.
Cheers (0 Replies)
Discussion started by: MacLon
0 Replies
3. UNIX for Dummies Questions & Answers
How do I add a user to a group? And how do I determine the list of groups to add a user?
Solaris 10 newbie (1 Reply)
Discussion started by: peteythapitbull
1 Replies
4. UNIX for Dummies Questions & Answers
Hi I have a user zak and
4 groups:-
oracle
stats
data
archive
I want user zak to be part of the oracle and stats group but not be able to view,list anything in data and archive. Also anyone in the data and archive group should not be able to view,list anything in oracle and stats....... (3 Replies)
Discussion started by: Zak
3 Replies
5. Solaris
Hi.........
I'm trying to set a group of users to login to do a required super-user tasks without knowing the super-user passwd.
For example...a user popodude logs in as self with passwd..system accepts the password & then automatically asks for the super-user account passwd.
My goal is... (1 Reply)
Discussion started by: Remi
1 Replies
6. AIX
Dears
Security users in AIX don’t have permission to change the group of the user thru Smitty Users
When they try to change the group of the users to any group they'll get permission denied
Security profile in Smitty :
User... (10 Replies)
Discussion started by: ITHelper
10 Replies
7. UNIX for Dummies Questions & Answers
hi all
i am new to solaris
how to add a user to multiple(secondary) groups.
user :anna
Groups : delhi ,mumbai,pune
i need like this in cat /etc/group
delhi::anna
mumbai::anna
pune::anna
i tried using
usermod -a -G hyd anna
that does int work
how to delete user from group... (3 Replies)
Discussion started by: kalyankalyan
3 Replies
8. Shell Programming and Scripting
Dear All,
I want to know all users & group history in one file, for root terminal through shell or any other option (5 Replies)
Discussion started by: kpoobathi
5 Replies
9. AIX
Is there a command to nest a group in another group in AIX. (2 Replies)
Discussion started by: daveisme
2 Replies
10. UNIX for Advanced & Expert Users
Hi all,
I want to list out users from different group and root, who are roaming in our group or root as a user.
how can i list out this users ? (1 Reply)
Discussion started by: kpatel97
1 Replies
LEARN ABOUT CENTOS
groupmems
GROUPMEMS(8) System Management Commands GROUPMEMS(8)
NAME
groupmems - administer members of a user's primary group
SYNOPSIS
groupmems -a user_name | -d user_name | [-g group_name] | -l | -p
DESCRIPTION
The groupmems command allows a user to administer his/her 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.
OPTIONS
The options which apply to the groupmems command are:
-a, --add user_name
Add an 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
Delete a user from the group membership list.
If the /etc/gshadow file exist, the user will be removed from the list of members and administrators of the group.
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
The superuser can specify which group membership list to modify.
-h, --help
Display help message and exit.
-l, --list
List the group membership list.
-p, --purge
Purge all users from 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.
-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.
$ groupadd -r groups
$ chmod 2770 groupmems
$ chown root.groups groupmems
$ groupmems -g groups -a gk4
CONFIGURATION
The following configuration variables in /etc/login.defs change the behavior of this tool:
MAX_MEMBERS_PER_GROUP (number)
Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in /etc/group (with the same name,
same password, and same GID).
The default value is 0, meaning that there are no limits in the number of members in a group.
This feature (split group) permits to limit the length of lines in the group file. This is useful to make sure that lines for NIS
groups are not larger than 1024 characters.
If you need to enforce such limit, you can use 25.
Note: split groups may not be supported by all tools (even in the Shadow toolsuite). You should not use this variable unless you really
need it.
FILES
/etc/group
Group account information.
/etc/gshadow
secure group account information
SEE ALSO
chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), useradd(8), userdel(8), usermod(8).
shadow-utils 4.1.5.1 05/25/2012 GROUPMEMS(8)