Happy Thanksgiving Everyone!! I have a question about adding users to multiple groups. Thanks in advance
Using Red Hat and here are the issues:
Example:
Users:
Bob
Mark
Groups:
SystemsAnalysts
BusinessAnalysts
If I am adding a user Bob to both groups (SystemsAnalysts and BusinessAnalysts)
Code:
usermod -G SystemsAnalysts Bob
usermod -G BusinessAnalysts Bob
Seems to be removing the user Bob from SystemsAnalysts group when I add the user Bob to the BusinessAnalysts group.
Is there a limit of groups a user can be in(assuming no)? Or any ideas why I am running into this issue. The only thing I can think of is maybe it has to do with the directory permissions and the group owner of the directory permissions??? Any help would be greatly appreciated!!
Last edited by pludi; 11-25-2011 at 11:39 AM..
Reason: figured it out
RH 7.2
I'm trying to list the users & groups on my machine. I found the lsuser & lsgroup commands but no associated man pages.
I typed: lsuser
I get --> Valid options are: -a
So I typed: lsuser -a
I get --> Valid options are: groups, home
So I typed: lsuser -a groups
I get -->... (2 Replies)
hi eveyone i've recently requested my unix admin to create a userid for 2 groups. He created the id and i can see it by grep "id" /etc/group.
But when i login with that id into unix and try to cd that group it says permission denied. something like cd /groupname -- permission denied
Can my admin... (1 Reply)
How do I remove a user from a group? I'm using the usermod command but its not working.
I have a user "abc" who is a member of the groups root and other. I'm trying to remove him from the group "other" (using CLI) which is his secondary group but it's not working.
How do I do this? Is there any... (11 Replies)
Hi
I am new to unix so hopefully someone can help. I need to list all the users I have in my unix enviroment (AIX) and the groups (primary and secondary) they belong to.
Can anyone help?
Many thanks in advance (2 Replies)
Hi,
I have two little issues:
1) there is possible in sh to create a function who return a boolean value?
2)i have to verify if an user belongs to a group and i think it is needed to create a function which take two parameter and return a boolean value. in fact i have to parse /etc/group... (5 Replies)
Hi
Could anyone please suggest how we can check in Linux if a user or a group name is already existing? In case of a user the command should also be able to specify the user with a given directory and shell. We can of course check this using a grep command but since that is just a pattern match,... (12 Replies)
Hi Guys,
I want a script where in I need to send an email to individual users about their groups.
OS:unix redhat
Shell :Bash.
The mail should be like,"Hi &username , you are in part of &group1,&group2 .."
I need to mail to their personal email id mostly @outlook. Not to their UNIX.... (1 Reply)
Discussion started by: vijay2107
1 Replies
LEARN ABOUT REDHAT
usermod
USERMOD(8) System Manager's Manual USERMOD(8)NAME
usermod - Modify a user account
SYNOPSIS
usermod [-c comment] [-d home_dir [-m]]
[-e expire_date] [-f inactive_time]
[-g initial_group] [-G group [,...]]
[-l login_name] [-p passwd]
[-s shell] [-u uid [-o]] [-L|-U] login
DESCRIPTION
The usermod command modifies the system account files to reflect the changes that are specified on the command line. The options which
apply to the usermod command are:
-c comment
The new value of the user's password file comment field. It is normally modified using the chfn(1) utility.
-d home_dir
The user's new login directory. If the -m option is given the contents of the current home directory will be moved to the new home
directory, which is created if it does not already exist.
-e expire_date
The date on which the user account will be disabled. The date is specified in the format YYYY-MM-DD.
-f inactive_days
The number of days after a password expires until the account is permanently disabled. A value of 0 disables the account as soon as
the password has expired, and a value of -1 disables the feature. The default value is -1.
-g initial_group
The group name or number of the user's new initial login group. The group name must exist. A group number must refer to an already
existing group. The default group number is 1.
-G group,[...]
A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no inter-
vening whitespace. The groups are subject to the same restrictions as the group given with the -g option. If the user is currently
a member of a group which is not listed, the user will be removed from the group
-l login_name
The name of the user will be changed from login to login_name. Nothing else is changed. In particular, the user's home directory
name should probably be changed to reflect the new login name.
-p passwd
The encrypted password, as returned by crypt(3).
-s shell
The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.
-u uid The numerical value of the user's ID. This value must be unique, unless the -o option is used. The value must be non-negative.
Values between 0 and 99 are typically reserved for system accounts. Any files which the user owns and which are located in the
directory tree rooted at the user's home directory will have the file user ID changed automatically. Files outside of the user's
home directory must be altered manually.
-L Lock a user's password. This puts a '!' in front of the encrypted password, effectively disabling the password. You can't use this
option with -p or -U.
-U Unlock a user's password. This removes the '!' in front of the encrypted password. You can't use this option with -p or -L.
CAVEATS
usermod will not allow you to change the name of a user who is logged in. You must make certain that the named user is not executing any
processes when this command is being executed if the user's numerical user ID is being changed. You must change the owner of any crontab
files manually. You must change the owner of any at jobs manually. You must make any changes involving NIS on the NIS server.
FILES
/etc/passwd - user account information
/etc/shadow - secure user account information
/etc/group - group information
SEE ALSO chfn(1), chsh(1), passwd(1), crypt(3), groupadd(8), groupdel(8), groupmod(8), useradd(8), userdel(8)AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com)
USERMOD(8)