regarding sudoers permission
 

Dear Experts ,

I have a normal user 'bob' in linux . I try to execute below command :

chmod o+r file1

using bob . but It denied . Now I want to add bob user in sudoers file so that bob can permit only execute this command .
And make sure that Bob should not execute other privileged command .

I need your help ...

Isn't it easier to make file1 owned by a group bob is member of?

what did you try?
I used to suggest to implement the required functionality in a shell script (which can only do what you need) and you can add sudo right to bob to execute this script.
https://unix.stackexchange.com/quest...assword-prompt

Actually I use chmod command into one of my script and mention below line on sudoers file :

## Same thing without a password
# %wheel ALL=(ALL) NOPASSWD: ALL
%bob ALL=(ALL) NOPASSWD: ALL

But so far i know , 'ALL' can execute all privileged command but I just need chmod command only .

Check out this link might help: https://kifarunix.com/run-only-speci...sudo-in-linux/

From link above:

But if Bob had the sudo ability to chmod any file then he would have the ability to make any file writable and so alter any file, wouldn't he?

that's why "we" need a script which can do only what we need, nothing more.
For example take one filename argument, but works only in a specified directory.

Anyway a setgid dir probably better...

Thanks all.. I got my solution ..

Then please share it.
Don't hit and run.
Others will benefit.

cat /etc/sudiers :

myusername ALL = (root) NOPASSWD: /path/to/my/program

here my user name is 'backup'
"backupe ALL = (root) NOPASSWD: /sbin/gzip chmod "



Later on I add below lines onto the script :

cd /u01/backup
sudo gzip OBUDB_before.$Date.dmp

cd /u01/backup
sudo /bin/chmod o+r *