Non-Root User

quwaie · 01-15-2004, 07:27 AM

Dear all,

How to allow the Non-Root user to do shutdown?

Using RedHat

Help Me Pleas....

Best Regards,
Mohammad A. Al Quwaie
Saudi Arabia

kilgoretrout · 01-15-2004, 07:53 AM

Change the permissions on the shutdown command with:

# chmod 755 /sbin/shutdown

I think that should work, but if it doesn't run:

# chmod 4755 /sbin/shutdown

quwaie · 01-15-2004, 09:36 AM

Dear,

I have Changed the permissions, but still i couldn't do shutdown by
Non-Root user.

Regards,

kev82 · 01-15-2004, 09:59 AM

i think redhat sets up ctrl-alt-delete to do a shutdown but i might be wrong. the only reason i can think of for "chmod 4755 /sbin/shutdown" not to work is if the binary wasnt owned by root, what is the output of "ls -l /sbin/shutdown"?

quwaie · 01-15-2004, 10:11 AM

The output is : -rwsr-xr-x

kev82 · 01-15-2004, 10:29 AM

sorry i meant the whole output, i want to know who owns the binary, eg heres mine

Code:

-rwxr-xr-x    1 root     bin         15224 Jun 19  2002 /sbin/shutdown

here root is the owner is the file and bin is the group of the file

rmanocha · 01-15-2004, 03:11 PM

you could give the user sudo access to the shutdown command.
sudo is a program which lets a user execute a command as another user.
i would think this method as easier and more secure than changing the permissions of the shutdown command as other people would be able to use the command too if you make it executable for all.
you should probably have sudo with your distribution.just read the ma pages for sudo and then edit the sudoers file accordingly.
let me know if you need more help.

quwaie · 01-15-2004, 03:13 PM

Code:

-rwsr-xr-x    1 root     root     15585 jan 15 15:22 /sbin/shutdown

kev82 · 01-15-2004, 03:21 PM

and with that normal users cant shutdown? there must be something else getting in the way - possibly pam. what is the error you get when you try to shutdown as a normal user.

quwaie · 01-16-2004, 01:03 AM

I am here again,

kev82,

The error MSG is : -bash : shutdown: Command not found

rmanocha,

sudo good idea , and that's what i need....YES

I have played with it visudo , but I'am not good in editing

Kindly please advice me what to do Step by Step

Thank you all 4 your fast action.

Mohammad

kilgoretrout · 01-16-2004, 02:14 AM

In redhat you have to run:

$ /sbin/shutdown

Not:

$ shutdown

quwaie · 01-16-2004, 09:22 AM

sorry, i have posted by mistake.

rmanocha · 01-16-2004, 10:56 AM

i am not very sure about the sudoers file but i believe that to give say user xyz permission to execute shutdown what you have to put in sudoers is:
xyz ALL = /sbin/shutdown

i think this should do it.you should read up on the documentation given for the sudoers file:
man sudoers
i hope this helps.

Salpula · 02-25-2004, 07:18 PM

I ran into the same issue with red hat 9, I got around by simply doing an SU before shutting down or using "halt". Halting the system sends all processes a SIGTERM and then a SIGKILL and unmounts all drives before stopping the system.