how do I make sure that the user that is going to run the script is a root user???

nikold01 · 09-09-2004, 07:06 PM

I am writing a script that takes input from one file and processes it and then it redirercts the output to a different file.

Now my question is: How can I make sure that the user that is trying to run the script is a root user???

Any help would be greatly appreciated.

homey · 09-09-2004, 08:04 PM

You can add something like this to the top of the script...

#!/bin/bash
#
# Ensure that root is running the script.
##
WHOAMI=`/usr/bin/whoami`
if [ $WHOAMI != "root" ]; then
echo "You must be root to add news users!"
exit 1
fi
#

nikold01 · 09-10-2004, 01:06 AM

thanks alot

That worked perfectly

db391 · 09-10-2004, 07:54 AM

chown root.root SCRIPT
chmod +s SCRIPT

this sets the suid bit

therefore when you run the program you are running it as root even is logged in as a user