shutdown RH 8
 

I usually logged as a regular user. whan I want to shotdown the system I know I must su to root an than enter the command shutdown or init but whan I do that I recive command not fownd.

why?

shutdown is located in /sbin/ which isn't in a normal users $PATH. If you just run su it doesn't create a login shell so you don't get that users environment settings etc.

Short answer - if you use su you will have to run /sbin/shutdown

Otherwise run su - (that's su followed by a dash) and that makes it a login shell and you can run shutdown without having to specify it's path.

because when you su to root the root profile file is not executed. first execute the profile file and this problem will fly away
#. /root/.bash_profile

silent bob gave the correct answer.
Cheers for Silent BOB

if you chmod 7755 /sbin/shutdown you can shutdown the machine as regular user

True. But then ANY user logged in to your machine can shut it down...

how i can do that?

How can you do what? Allow all users to be able to shutdown? nakkaya told us how to do it.

If you use the "su - root" it will load root's PATH and then you can just issue your shutdown command.