How to run a script that needs root permissions?

[GeertVc]

Hi,

I would like to make a script to update the clock of my Linux distro (Kubuntu), using ntpdate.
But ntpdate needs root permissions. From the command line, I can use "sudo ntpdate ..." and then give my password, but how can this be done from a script?

Best rgds,

--Geert

[f1rem0th]

Re: How to running a script that needs root permissions?

Im not 100% sure, but i think that if you run the script with root permissions, that access level elevation applies to every line of the entire script.

so say you had script.sh

and script.sh contained:

ls
ntpdate

and you executed it like this,

sh script.sh

it would execute the ls, and then throw an error about needing root permissions for ntpdate.

hoewere if you initiated the script with

sudo script.sh

then it should execute the ntpdate fine, due to the access levels for the script in general being elevated to root.

[GeertVc]

Re: How to run a script that needs root permissions?

hoewere if you initiated the script with

sudo script.sh

then it should execute the ntpdate fine, due to the access levels for the script in general being elevated to root.

Indeed, that does the trick!

Thanks very much.

Best rgds,

--Geert

[Rog131]

Re: How to running a script that needs root permissions?



About ntpdate:

Time is accelerating in KDE
http://kubuntuforums.net/forums/index.php?topic=8116.0

[GeertVc]

Re: How to run a script that needs root permissions?

About ntpdate:

Time is accelerating in KDE
http://kubuntuforums.net/forums/index.php?topic=8116.0

That is even better, since I can let the system update the clock automatically.

Was completely not aware of the existence of KCron... Should play more with the GUI iso working too much command line...

Tnx!

Best rgds,

--Geert

[Rog131]

Re: How to running a script that needs root permissions?



Sometimes "passwordless sudo for the script" is handy:

Topic: Need some help with shell scripts.
http://kubuntuforums.net/forums/index.php?topic=5493.0

Be careful !


Links:
Sudoers
https://help.ubuntu.com/community/Sudoers

Sudoers Manual
http://www.gratisoft.us/sudo/man/sudoers.html

How to configure Sudo to run programs as a different user
http://newbiedoc.berlios.de/wiki/How...different_user