Unable to add more groups for one user

[Tom Spence_1]

Hi, I am using 10.20 HPUX and can't add more group membership for user.

Here what I did:

Run SAM
- Accounts for Users and Groups
- Users
- [select user (tspence)]
- Menu -> Actions -> Modify Group Membership...
- added 4 groups (staff,ddrs,ddds)
- all exit

# id tspence
uid=316(tspence) gid=204(staff) groups=3(sys)

groups said sys? Where is other groups??? Any idea?

Thanks for your help...

[Christopher McCray_1 · Accepted solution]

Hello,

What is the output of:

# groups tspence


Chris

[Tom Geudens]

Hi,
Can you check if you actually added the user to the groups ?
grep "ddrs" /etc/group
grep "ddds" /etc/group
...
Is tspence actually in them ?

Regards,
Tom

[Christopher McCray_1]

check for the link /etc/logingroup pointing to /etc/group... is it there?


what does your /etc/group look like?

Chris

[F Verschuren]

How many groeps do you have on the system?
please run a
pwck
and
grpck
to veryfy if all groeps are corectly.
if this doen't work
please atacht the group file and the passwd file for a closer look.

[Nick Wickens]

There is a man page for logingroup which may help.

[Tom Spence_1]

Hello,

What is the output of:

# groups tspence

Chris

----------------------------
Wow fast respond!

Ok the output:
#groups tspence
ddds ddrs staff sys

Thanks. BUT I can't access one file like this:

drxwrxw--- dspence ddrs ... [filename]

How can I read the file even though I am ddrs group? Any idea?

[Hai Nguyen_1]

What is the output of this command?
# id -nG tspence

Does it list all the groups you added for this user?

Hai

[Tom Spence_1]

What is the output of this command?
# id -nG tspence

Does it list all the groups you added for this user?

Hai
---------------------
output:
#id -nG tspence
staff sys

3 miss groups? Any idea?

[Christopher McCray_1]

Hello,

Have you logged out and logged back in (assuming you added these groups while logged in)?

What did this do?

Chris

[Hai Nguyen_1]

Thomas,

...
Thanks. BUT I can't access one file like this:

drxwrxw--- dspence ddrs ... [filename]
...

In order to access the file,
you need to do this:

# newgrp ddrs
# do your work here
# newgrp

The last command will bring you back to your default group.

Hai

[Tom Spence_1]

Hello,

Have you logged out and logged back in (assuming you added these groups while logged in)?

What did this do?

Chris
-----------------------------
I just login as root first before I log in my account.

$ groups tspence
ddds ddrs staff sys
$ id tspence
uid=316(tspence) gid=204(staff)

Is that strange? No ddds, ddrs, and sys. Also I don't see any /etc/logingroup.... Do I need to have /etc/logingroup? I don't use NIS...

-Tom

[Christopher McCray_1]

Hello again.

Yes, you definately need this

# ln -s /etc/logingroup /etc/group

you should see:

dmc03:/etc# ll login*
lrwxrwxrwx 1 root root 10 Jul 7 1998 logingroup -> /etc/gro
up
Read the man pages on logingroup

Hope this helps

Chris

[Tom Spence_1]

Hello again.

Yes, you definately need this

# ln -s /etc/logingroup /etc/group

you should see:

dmc03:/etc# ll login*
lrwxrwxrwx 1 root root 10 Jul 7 1998 logingroup -> /etc/gro
up
Read the man pages on logingroup

Hope this helps

Chris
----------------------------
Ahh, I see but after I made ln but error...

#ln -s /etc/logingroup /etc/group
ln: /etc/group exists

You mean:
#ln -s /etc/group /etc/logingroup?

[Christopher McCray_1]

Yes,

This is what happens when you sleep upside-down all night.

Chris

[Tom Spence_1]

MILLION THANKS TO EVERYONE!!! It works GGGRRREEEAAATTT!!!

I appreciate it!!!

-Tom

[Bill Hassell]

Just a note to explain what is happening:

/etc/logingroup (for the old 10.20 and earlier opsystems) defines the multi-membership groups and users. If it does not exist, users must use the newgrp command (a pain but works fine). By linking logingroup to group, then all multiple group memberships in group will be activated.

NOTE: do not copy group to logingroup since any changes made to group will not be reflected in logingroup.

[Tom Spence_1]

Ok, let me clarify..

Should I?

1) #ln -s /etc/logingroup /etc/group

OR

2) #ln -s /etc/group /etc/logingroup

I picked #2, if I am wrong then I'll remove logingroup then how can I make new logingroup? Once you said 'can't copy group to logingroup'. I tried 'newgrp' command but no new file 'logingroup'? Any idea?

[Christopher McCray_1]

You chose correctly.

If you do an ll on /etc/logingroup, you should see the output I posted previously. As Bill said, This link removes the need to execute the newgrp command. Also, by having the link instead of copying /etc/group into /etc/logingroup, any changes made to /etc/group is reflected in /etc/logingroup. Copying will not reflect any changes until another copy is made.

In short, If you have the link now, you are fine.

Chris