bash script with time delay [solved]

[Specialized]

Hi,
I want to write a little bash script which checks if an internet Connection is established and then starts the ntp-client.
If there is no connection it should wait about 25 s and try again.
At the Moment it looks like this:

Code: Select all

 if ping -c1 www.google.de | grep "1 received"; 
	then /etc/init.d/ntp-client start; 
else /home/hannes/Connections/./ntp.sh;
fi

But this costs a lot of Systemresources til the Client has started.
I'm looking for something like that:

Code: Select all

if ping -c1 www.google.de | grep "1 received"; 
	then /etc/init.d/ntp-client start; 
else "wait for 25 seconds and execute /home/hannes/Connections/./ntp.sh again";
fi

Any ideas how to do this?

[garion911]

try:

Code: Select all

if ping -c1 www.google.de | grep "1 received";
   then /etc/init.d/ntp-client start;
else sleep 25 && /home/hannes/Connections/./ntp.sh;
fi

[mens]

do sth like

Code: Select all

ping -c1 www.google.de
while [ $? -ne 0 ]
do
    sleep 25
    ping -c1 www.google.de
done
/etc/init.d/ntp-client start

[Specialized]

That's it, thank's!!!!