Shell Programming and Scripting

Hi,

I have a requirement to change the user during runtime within a shell script. Is their any way via which I can change the user by prefeeding the password?

Please reply.

Thanks.

Hi

I think you can use sudo like commands. I made some perl scripts, which are launched from the web (so, with apache user), but the script actions are done under a real-user id. I manage this by adding the script path with `sudo visudo` command.
Actually the script is started under a real user credential, not under apache user credential.

I think you can launch from your script a subprocess (with `system` call, and the parameter to that system call should be something like: sudo USER CMD)

Hope it helps

Another way to do it is i.e if you want to change to the user to the owner of the file then you can use 's' bit. i.e the setuid bit on the file. So the executable when it runs , runs as if the owner of the executable is running it

Thanks,

I'll try the same...

I highly recommend against doing this. This is a very bad for security and avoid it at all costs. Some systems like AIX will ignore the setuid bit on a shell script. Use a sudo like solution.