06-17-2010
Groups in Unix ???
What is Primary group and Secondary Group in Unix.?
10 More Discussions You Might Find Interesting
1. Cybersecurity
Hi,
Is it possible that one user belongs to many groups, or the relation of user/group is 1/1?. Thanks
Ramón (2 Replies)
Discussion started by: rsanz
2 Replies
2. UNIX for Advanced & Expert Users
I created UNIX groups - oinstall, dba and UNIX user - oracle for the installation of Oracle 10g. But I might did something incorrectly. Oracle user account didn't created properly. How to remove these UNIX groups and user so that I can start over again to create them properly. Thanks. (7 Replies)
Discussion started by: duke0001
7 Replies
3. AIX
Hello
A couple of weeks ago, I added a user to an AIX 5.3 system.
I go to add one today, and it appears that when creating a user in smit, I cannot see any groups.
No primary groups
No Group set
No Admin Groups
The /etc/group and etc/secuity/group files seem to be intact.
I did... (4 Replies)
Discussion started by: mhenryj
4 Replies
4. Shell Programming and Scripting
I have some groups and when i issue a command like
groups $LOGNAME
it displays in one line
rfautosys c2ru cash2
I want to fetch only group starting with c2 but when i grep i am getting full line. Can someone advise
on this please as how i can get output as c2ru? (2 Replies)
Discussion started by: gehlnar
2 Replies
5. UNIX for Dummies Questions & Answers
Is there a way to find out all users and the UNIX groups they belong to??
:) (3 Replies)
Discussion started by: Hangman2
3 Replies
6. Solaris
how to create 1000 users in 1 group (0 Replies)
Discussion started by: tirupathi
0 Replies
7. Solaris
1 user in member of 4 groups find file permissions and default group (1 Reply)
Discussion started by: tirupathi
1 Replies
8. UNIX for Dummies Questions & Answers
Must I be in a group? I am using Ubuntu and am the only user on my PC. I know how to change groups but do not see a way to not be in a group. Any help would be appreciated. (2 Replies)
Discussion started by: nthepines
2 Replies
9. Shell Programming and Scripting
Hi All
I am trying to do ssh to different server and on the remote server for each user trying to get groups of that user but i am not getting the required
result.
ssh username@ip_address "for i in $( cat /etc/passwd| cut -d: -f1);do groups $i done;exit" >>abc.txt
only names are... (5 Replies)
Discussion started by: Ekamjot
5 Replies
10. UNIX for Beginners Questions & Answers
Hi Team,
I got a requirement to send a mail to the individual users of a unix server about their respective groups. can some one help me to provide the script as I am unable to write that.
I tried with below lines but I come out with errors.
cat /etc/passwd | awk -F':' '{ print $1}' |... (6 Replies)
Discussion started by: harshabag
6 Replies
LEARN ABOUT NETBSD
newgrp
NEWGRP(1) BSD General Commands Manual NEWGRP(1)
NAME
newgrp -- change to a new primary group
SYNOPSIS
newgrp [-l] [group]
DESCRIPTION
The newgrp command changes a user to a new primary group (real and effective group ID) by starting a new shell. The user remains logged in
and the current directory and file creation mask remain unchanged. The user is always given a new shell even if the primary group change
fails.
The newgrp command accepts the following options:
-l The environment is changed to what would be expected if the user actually logged in again. This simulates a full login.
The group is a group name or non-negative numeric group ID from the group database. The real and effective group IDs are set to group or the
group ID associated with the group name.
If group is not specified, newgrp restores the user's real and effective group IDs to the user's primary group specified in the password
database. The user's supplementary group IDs are restored to the set specified for the user in the group database.
If the user is not a member of the specified group, and the group requires a password, the user will be prompted for the group password.
FILES
/etc/group The group database
/etc/master.passwd The user database
/etc/passwd A Version 7 format password file
EXIT STATUS
If a new shell is started the exit status is the exit status of the shell. Otherwise the exit status will be >0.
SEE ALSO
csh(1), groups(1), login(1), sh(1), su(1), umask(2), group(5), passwd(5), environ(7)
STANDARDS
The newgrp command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
A newgrp command appeared in Version 6 AT&T UNIX. A newgrp command appeared in NetBSD 5.0.
BUGS
There is no convenient way to enter a password into /etc/group. The use of group passwords is strongly discouraged since they are inherently
insecure. It is not possible to stop users from obtaining the encrypted password from the group database.
BSD
June 6, 2007 BSD