Shell script

[jamess_jack]

Hi

I want to write a shell script for the following scenario.

when person wants to change the user, He/She types : su -

then system asks password.

I want to automate in a way that "su -" command will automatically take password from my script.

can anybody tell me, if it is possible and how ??

Thanks a lot.

bye.

[Ziplock]

What are you trying to achieve?

Running su without a password for all commands is basically giving people administrator access... I would not recommend it at all - EXTREMELY insecure. Also, by putting the password in a file, you are also giving them root password as the script is probably going to need to be readable...

You can tie it down to a couple of commands that you want to run though. This would enable you to do something like 'let mary and joe run the shutdown command without a password', without giving them complete administrator privileges.

[jamess_jack]

I will only run that script for me.....

no access is allowed..

Is it possible.

[signmem]

mabye su can not use in script. try sudo. it's better.

[jamess_jack]

supppose this is the shell script:

#!/bin/sh
sudo su

When I will run it it wil ask me for password.

But I want to make it like that I can provide that "password" through my shell script.

Does any body knows, if it is possible?? if yes then how ??

[signmem]

you have to edit /etc/sudoer file
exmaple:
username ALL=(ALL) NOPASSWD: /sbin/mount /dev/cdrom /mnt

so your script can be write to:
#!/bin/bash
sudo /sbin/mount /dev/cdrom /mnt

and must be execute by username < - user.

[jamess_jack]

I want to write more scripts like this which asks for the different things from user.

and I want to make in that way it will do everything and automatically from the shell script.

[signmem]

try chown root script.sh ; chmod 1555 script.sh <- but dangerous.