Time Synchronization (BASH)

English Programming/Scripting
#1

hi

I am running opensuse 12.1. i synchronize my time from the command line using the following command:

ntpdate pool.ntp.org

however, to run this command i need to be logged in as superuser.

how can i write a bash script that can login as root and run this command. (i want to set this script to run as a cron task, hence…)

any help would be appreciated!

db

#2

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Don’t do anything special with the script, just run it as ‘root’ from
crontab:

In /etc/crontab:

0 * * * * root /path/to/your/script/settime.sh

It should run at the top of every hour with the definition above.

Good luck.
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#3

blackbird sr71 wrote:
> I am running opensuse 12.1. i synchronize my time from the command line
> using the following command:
>
>
> Code:
> --------------------
> ntpdate pool.ntp.org
> --------------------
>
>
> however, to run this command i need to be logged in as superuser.
>
> how can i write a bash script that can login as root and run this
> command. (i want to set this script to run as a cron task, hence…)

You don’t need a bash script to run a command as root. Just put the
command in root’s crontab.

But in this case, why don’t you simply use the ntp daemon? Use YaST to
set it up.

#4

Why not using ntpd rather than ntpdate? Just enable this service, for example using Yast -> System Services -> ntp and “Yes”.
If you want to use ntpdate, you have to put it in a cron job (not in a bash script).

#5

thank you! the ntp daemon does the trick!
appreciate your help,
db