How to configure a cron job to run every 15 mins starting at the 10th min of the hour, but it shouldn't run between 10:30 to 11:00 and 22:30 to 23:00.
I have figured out the logic to run it every 15 mins starting at the 10th min of the hour, but it stops from 10:00 to 11:00 and 22:00 to 00:00
The cron expression that I have built is:
10/15 0-10,11-22 * * *
A modified cron expression where the job runs every 15 min starting at the 10th min of the hour, but doesn't run between 10:30 to 11:00 and 22:30 to 23:00
Related
The following cron expression cron(0 14 ? * MON-FRI *) basically runs something 4:00 pm from Monday to Friday.
I am wondering if it is possible to modify the expression so I can run something at 4:00 am and 4:00 pm every Monday to Friday.
Use this crontab line to run command_name at 4:00 and 16:00 (4 AM and 4 PM) Monday-Friday:
0 4,16 * * 1-5 command_name
From crontab manual:
The time and date fields are:
field allowed values
----- --------------
minute 0-59
hour 0-23
day of month 1-31
month 1-12 (or names, see below)
day of week 0-7 (0 or 7 is Sunday, or use names)
Your Cron job description looks different from the general crontab. But to give you an idea of how to achieve what you're looking for:
Edit cron-table. Choose your editor.
crontab -e
Add 2 lines cron jobs.
* 4 * * 1-5 /usr/bin/...# Your command goes here 04:00 am.
* 16 * * 1-5 /usr/bin/...# Your command goes here 04:00 pm.
4PM (16:00): 0 16 * * MON-FRI
See crontab guru
"At 16:00 on every day-of-week from Monday through Friday.”
4AM &4 PM (4:00 & 16:00): 0 4,16 * * MON-FRI
See crontab guru
“At minute 0 past hour 4 and 16 on every day-of-week from Monday through Friday.”
How to run a Cron job every 15 minutes , but it should NOT run between 9:00 (AM) to 10:00 (AM).
You may try:
* 0,15,30,45 0-9,10-23 * * ?
The above CRON says to run on the hour, 15, 30, and 45 minutes past the hour, from midnight to 9am, and from 10am to midnight. This excludes 9am-10am which was your requirement.
I want to run a python script on a ubuntu 14.04 server with following frequency:
Monday to Friday:
From 0800 hrs to 1600 hrs: Run once every hour
From 1600 hrs to 2300 hrs: Run once every 30 minutes
Saturday and Sunday:
From 0800 hrs to 2300 hrs: Run once every two hours
At other times, don't run
Is this possible with cron? If not, can anybody suggest some alternative?
As suggested in the comments, adding these cron entries will do:
(Lines starting with # are comments)
# monday to friday, 8 am to 4 pm, once every hour
0 8-16 * * 1-5 <command>
# monday to friday, 4 pm to 10 pm, twice every hour
0,30 17-22 * * 1-5 <command>
# saturday to sunday, 8 am to 11 pm, once every hour
0 8-23 * * 0,6 <command>
I am trying to setup my cron jobs to run only once a day at 9 am.
This is what I am using now:
Minute Hour Day Month Weekday
0 0,09 * * *
The problem is that it runs 2 times a day:
- at midnight 00:00
- and at 09:00
How can I make it to run only at 09:00 (once a day)?
0 9 * * * /path/to/your/cron/scrip >/dev/null 2>&1
Your cron job will be run at: (5 times displayed)
2014-10-14 09:00:00 UTC
2014-10-15 09:00:00 UTC
2014-10-16 09:00:00 UTC
2014-10-17 09:00:00 UTC
2014-10-18 09:00:00 UTC
refer Cronjob Generator
If I creating cronjob to running for every 2:30 the command will run? (It mean, my cron will running after 90 minutes for every hours.)
the command like: 30 */2 * * * /command/xxx => that's right?
Please help?
Your cron expression 30 */2 * * * will run the command every 2 hours at 30 mins past the hour i.e.00:30, 02:30, 04:30, 06:30 and so on.
If you want to run your command at intervals of two and a half hours i.e. 00:00, 02:30, 05:00, 07:30 and so on, you need to set up two crons:
0 0-20/5 * * * runs at 0 mins past the hour, every 5 hours between 00:00 and 20:00 inclusive i.e. 00:00, 05:00, 10:00, 15:00 and 20:00
30 2-22/5 * * * runs at 30 mins past the hour, every 5 hours between 02:00 and 22:00 inclusive i.e. 02:30, 07:30, 12:30, 17:30 and 22:30
On the other hand, if you want to run your command only once every day at 02:30 use 30 2 * * *.
sudo crontab -e
and then add this:
30 2 * * * /enter/your/command