Debian

Hi everyone, I have an issue with a project of mine. I have to run a program on a terminal which requires to be logged in as su to have it run it. Given that I'm having problem to use expect to give the password I'd like to change the privilege of that program from SU to normal user ( I have the SU password, the problem is that it's going to be a standalone machine with everything automated).

Sorry for my English, I'm not a native speaker

Thanks for your help

Hi,
have you tried ssh keys?

I use ssh keys to connect to the terminal, but once there i need to launch a program as SU, the thing that I wan to do right now is change the privileges needed to run that program from SU to normal users

Ok. try that:

Code:

@maya# ssh root@yourhostname ssh anotheruser@yourhostname $PATH/hello_world.sh
    Hola we
@maya#

Is it something like chmod 644 rwx?

---------- Post updated at 08:37 PM ---------- Previous update was at 08:35 PM ----------

Thanks for everything I found the answer I was looking for: chmod 777

That is a bad solution, cos' everyone can execute the program. your cuestion was about switch user to execute a program.

good look.

This is not quite right.

You need setuid - the program has to belong to root or whoever you su to.
Assume your file is named "myfile" someuser is whover you su to - could be root

Code:

su - someuser
chown someuser:somegroup myfile
chmod 4711 myfile

This will work ONLY if the filesystem where you have "myfile", will allow setuid. The chmod 4711 command sets setuid, and sets permissions to 711. to do a setgid try chmod 2711 [filename]. You do this if having group permissions lets the program run correctly.

Note: setuid programs unless written REALLY well are a security risk.