Permission inheritance problem

[Cameron Simpson]

On 18Nov2011 11:07, kavya <kavya.g4 at gmail.com> wrote:
|           Am working with file permission I have a query,
| 
| usually on /mnt normal users will not be having permission to write so I
| gave permission such as
| #chmod 766 /mnt

Surely you want 777 here? A directory with no 'x' permission is not
searchable; 'r' only lets someone see the names of the things in the
directory, 'x' (search) lets them access it. So with a directory you
almost always want to grant 'x' if you grant any access. You don't need
to give 'r', but it is usual. So 'r-x' and '--x' are sensible, 'r--' is
usually not sensible.

| #chmod go+t /mnt

You just want "+t" here. There is no such thing as "sticky bit for
group" or "sticky bit for other". There is only one bit.

| I have enabled a sticky bit on /mnt  for group and
| others, as sticky bit is set, even the files and folders under /mnt can not
| be deleted by others even if they have complete permissions and no sticky
| bit is set for files under /mnt,

Yes.

| is there any option to allow users to
| delete only particular files ?????

No. The permissions on /mnt apply to the directory as a whole,
not on a per-name basis.

If you want per-name control the best you can do is make subdirectories
and grant different accesses to those. Which is what home directories
effectively are, if you would like a similar arrangement.

Cheers,
-- 
Cameron Simpson <cs at zip.com.au> DoD#743
http://www.cskk.ezoshosting.com/cs/

My opinions are borrowed from someone who no longer needs them.
        -- KatmanDu at uga.cc.uga.edu