Seting cron for every second

Rinish · 03-17-2006, 01:18 AM

HI All,
I wana set a cron to run a script every second. Please reply back if any one knows how to do this.

Thanks & regards,

amitsharma_26 · 03-17-2006, 01:56 AM

Quote:

Originally Posted by Rinish

I wana set a cron to run a script every second.

What if your command dint got finished in 1 sec..

Wll the cron re-run the instance of it again in next sec & further on?

Leave that.

Cron only checks crontab enteries every minute.. & hence you cannot ask cron to process anything specified less to a minute. Hence cron cannot schedule anything to more minute* than a minute.

*small.

Refer cron/crontab man page.

doc.nice · 03-17-2006, 03:46 AM

maybe you could use this scritp running in background:

Code:

#!/bin/bash

###
### Sample background worker script
### for linuxquestions.org written
### by Florian Harbich (user doc.nice)
###
### Free for use or modification, even if
### useless in this variant... ;)
###

TERMINATORFILE="/var/run/backgroundworker.ctl"
GOON=1
while [ $GOON ]; do
  [ -f "$TERMINATORFILE" ] && GOON=0
  # do your repeated stuff instead of logger syslog sample here
  logger -t BGWorker --  "hi! I'm happy to tell you i'm still alive"
  sleep 1
done
rm -f "$TERMINATORFILE"

david_ross · 03-25-2006, 08:45 AM

Please do not post the same thread in more than one forum. Picking the most relevant forum and posting it once there makes it easier for other members to help you and keeps the discussion all in one place.

http://www.linuxquestions.org/rules.php

Please continue here:
http://www.linuxquestions.org/questi...d.php?t=425623