bash script to stop isdn service after x minutes?
 

I am looking for a script to stop my isdn service or ippp0 interface after x number or minutes. Eg stopthisservice.sh 30. I am struggling to get the basics sorted out like how to measure elapsed time in a bash script etc. I am thinking of a simple script eg:

while timenow < timetoelapse
do
timenow = now + elapseperiod
done

serivce isdn stop

Any ideas where I could look for help

Tx
p.n

Have the script 'sleep' for 30 minutes.

You could also use a two-stage script. Whereby stage one works out the time now plus your input, and calls `at' to perform the second stage of the script at the requested time. The second stage could then actually pull down the connection. Just an idea.

You don't need to work out the interval,

echo kill_scrip.sh | at now + 30 minutes

see 'man at'

you can keep recursivly calling the script in itself of course.

atq tells you what's on the at queue.

Or even simpler,

while kill_script.sh; do sleep $(( 30 * 60 )); done &

or better probably...

while sleep $(( 30 * 60 ));do kill_script.sh ; done &



regards,
billy