Instead of doing this, Simply build a script that has a content as follow: while [ true ] do script1.sh sleep 30 done It's much simpler and you don't need to run it via cron every minute. But you still can control the script and the start/stop via cron. Cheers, Simon >-----Original Message----- >From: redhat-list-bounces@xxxxxxxxxx >[mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Rohit khaladkar >Sent: Monday, April 20, 2009 10:59 AM >To: General Red Hat Linux discussion list >Subject: Re: Crontab > >I guess you cannot have crontab entry in terms of seconds.But >you can create >a script which would repeatedly run your script and give an >interval of 30 >seconds. >For eg, create a tmp.sh script which would run your desired script (say >script1.sh) after every 30 seconds. > >Your tmp.sh script would look like > >#!/bin/sh >script1.sh >sleep 30 >script1.sh >sleep 30 >script1.sh > > >Make an entry in the crontab to execute this script every minute. > >This should solve the purpose. If anyone comes up with a >better idea, feel >free to go ahead with that, but this is a workaround, if you are stuck. > >Thanks! >Rohit Khaladkar. > >On Mon, Apr 20, 2009 at 2:17 PM, ~~~0Pen ~~~ S0uRce ~~~ ><vijay1313@xxxxxxxxx >> wrote: > >> Hi guys, >> Do any one have idea that how can i >configure crontab >> to run a script after every 30 seconds,i know about default >parameters of >> crontab and tried google also,but could not find any thing. >> >> Any suggestion Please !!!! >> >> >> >> -- >> ~~~ 0Pen ~~~ S0uRce ~~~ >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list >> >-- >redhat-list mailing list >unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list