Running scripts as a different user without password

Question

I have a shell script that I need to run as another user, but, it can only be executed by the current user in my app. I want to execute something like this:

su user2 -C script.sh

But, how can I run this without having to type the password. Say the current user is user1 and the other user is user2. So, I need something which only lets user1 execute the script under user2 and nothing else.

I've tried changing my sudoers file but to no avail. Is there anything that I can do here with which I can accomplish this?

Answer 1

You'll have to edit you sudoers file only. Use visudo command and then add this to the file:

user1 ALL=(user2) NOPASSWD: /home/user2/bin/test.sh

This path used in this command should be absolute otherwise it won't work. Now you can call sudo -u user2 /home/user2/bin/test.sh from user1 shell.