chgrp shell = unknown group shell

[toy4x4]

Ok so I am stumped as to why I get unknown group shell ... how can some files appear to belong to the group shell?

root@cdma_targa:/# cd /data/local/
cd /data/local/

root@cdma_targa:/data/local# mkdir logs <------------------Create a directory
mkdir logs

root@cdma_targa:/data/local# ls -l
ls -l
drwxrwxrwx root root 2012-04-06 11:31 logs <--------- view that the directory belongs to Root owner and root group
drwxrwx--x mot_tcmd shell 2012-02-04 09:16 12m
drwxrwx--x mot_tcmd shell 2012-03-09 21:24 tmp
drwxrwxrwx shell shell 2012-04-06 10:55 mystuff

root@cdma_targa:/data/local# chgrp shell logs < ------- Now try to set group to shell
chgrp shell logs
chgrp: unknown group shell < ------- command fails to set to group shell because it is a unknown group

root@cdma_targa:/data/local# su shell
su shell

shell@cdma_targa:/data/local$ mkdir log <------------------------- SU to Shell and then make a directory
mkdir log

shell@cdma_targa:/data/local$ ls -l
ls -l
drwxrwxrwx root root 2012-04-06 11:31 logs
drwxrwx--x mot_tcmd shell 2012-02-04 09:16 12m
drwxrwx--x mot_tcmd shell 2012-03-09 21:24 tmp
drwxrwxrwx shell shell 2012-04-06 10:55 mystuff
drwxrwxrwx shell shell 2012-04-06 11:32 log <-------- Looks like this directory belongs to a group named shell here???

shell@cdma_targa:/data/local$ chgrp shell logs
chgrp shell logs

chgrp: unknown group shell <----------- Try to again to chgrp to shell and again Unknown group shell
shell@cdma_targa:/data/local$

Any Ideas what am I doing? Is there really no group named shell?

 

[Natey2]

It looks like root has no visibility of this shell group.
Try:
$ groups root
$ groups shell
$ groups mot_tcmd
to confirm.

What if you chown the logs dir to shell first, then su shell, then try chgrp the logs dir to shell?

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[Dave12308]

Excuse the stupid question, but what on earth are you trying to accomplish here?

 

[Natey2]

Looking at the script, I'd say (s)he is trying to change the group of the dir "logs" from "root" to "shell".

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