Run Every 45Minutes

[kozlow]

Any ideas on how to run a crontab job every 45Minutes?

 

[lpblauen]

do a crontab -e

45 * * * * /usr/bin/whatever >/dev/null 2>&1

Thats minutes hours dayofmonth month weekday command

 

[mrn]

Two ways spring to mind.

1) Seperate crontab entries

00 01
45 01
30 02
15 03
00 04
45 04
30 05

2) Script if counter = 3 run script, then run every 15 minutes from cron

00,15,30,45 *

Mike

"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."

http://www.airport-parking-site.co.uk/

 

[mrn]

45 * * * * /usr/bin/whatever >/dev/null 2>&1

would only run it every hour on the 45th minute

Mike

"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."

http://www.airport-parking-site.co.uk/

 

[lpblauen]

sorry misread post.

 

[columb]

Just for completeness

#!/bin/ksh

while :
do
  nohup /path/to/script/to/run &
  sleep 2700
done

but this method does tend to suffer from creep, the time to run the background process is non-zero so the loop takes a little over 45 mins - so don't set your watch by it!

Ceci n'est pas une signature
Columb Healy

 

[kozlow]

I am going to make my life easy and run every 40Minutes:

Even Hours - 00,40
Odd Hours - 20