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Full Discussion: chown issue
Top Forums UNIX for Advanced & Expert Users chown issue Post 302120392 by praveenkumar_l on Wednesday 6th of June 2007 08:11:37 AM
Old 06-06-2007
chown issue
I have a strange problem in my Linux box (Suse). Recently I took over this box as admin even though I have no prior admin experience. Following is my issue

I had following users under 'root' group initially

user1
user2
user3

Since I did not like user ids under root group. I modifed these user's group to 'users' using

usermod

command. Then I realised that all their files were still under group 'root', so using root id changed their group for all the files recursively using

chgrp -R users <home>

Then after some time, users complained that they could not able to change ower of the files. But claimed they could able to chown earlier

user3 tried the following

$ chown user1 test.sh

and getting the following error

> chown user1 test.sh
chown: changing ownership of `test.sh': Operation not permitted

file test.sh is owned by user3 and under users group

-rwxrwxrwx 1 user3 users 36 2007-05-16 17:50 test.sh

But it is working under root id (I know it should)

Then I changed the group back to root using

> id
uid=1010(iriuser3) gid=0(root) groups=0(root)

> id
uid=1008(iriuser1) gid=0(root) groups=0(root)

Even chgrp is nor working. Giving the same error

Please let me know how to resolve this issue
 

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LEARN ABOUT OPENDARWIN

chgrp

CHGRP(1)						    BSD General Commands Manual 						  CHGRP(1)

NAME

     chgrp -- change group

SYNOPSIS

     chgrp [-fhv] [-R [-H | -L | -P]] group file ...

DESCRIPTION

     The chgrp utility sets the group ID of the file named by each file operand to the group ID specified by the group operand.

     The following options are available:

     -H      If the -R option is specified, symbolic links on the command line are followed.  (Symbolic links encountered in the tree traversal
	     are not followed).

     -L      If the -R option is specified, all symbolic links are followed.

     -P      If the -R option is specified, no symbolic links are followed.  This is the default.

     -R      Change the group ID for the file hierarchies rooted in the files instead of just the files themselves.

     -f      The force option ignores errors, except for usage errors and doesn't query about strange modes (unless the user does not have proper
	     permissions).

     -h      If the file is a symbolic link, the group ID of the link itself is changed rather than the file that is pointed to.

     -v      Cause chgrp to be verbose, showing files as the group is modified.

     The -H, -L and -P options are ignored unless the -R option is specified.  In addition, these options override each other and the command's
     actions are determined by the last one specified.

     The group operand can be either a group name from the group database, or a numeric group ID.  If a group name is also a numeric group ID, the
     operand is used as a group name.

     The user invoking chgrp must belong to the specified group and be the owner of the file, or be the super-user.

DIAGNOSTICS

     The chgrp utility exits 0 on success, and >0 if an error occurs.

COMPATIBILITY

     In previous versions of this system, symbolic links did not have groups.

     The -v option is non-standard and its use in scripts is not recommended.

FILES

     /etc/group  group ID file

SEE ALSO

     chown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)

STANDARDS

     The chgrp utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

BSD
								  March 31, 1994							       BSD
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