Run Cron Job On Specific Minute? - cron

I need to run a cron job on the 3rd minute of every hour, every day.
Here's what I currently have:
3 * * * *
Is that how you correctly do it or would that run it every 3 minutes instead?

That is correct!
If you would like to run a job every third minute you could do like this:
*/3 * * * *

Related

How to run cron daily from one time to another time with frequency of 1 minute

I am trying to run function I need to run daily from 2 am to 5 am each minute,this is what I came up with
* 2,5 * * *
But this is not working,what seems to be wrong here

Run Cron Job every 5 minutes for 10 seconds

I have a script that I want to run every 5 minutes for 10 seconds.
*/5 * * * * /root/XXX/cronjobs/add-prod.sh
It seems logical to have another cron job that would run every 5 minutes and 10 seconds
that would turn off the 1st cron job.
Something like this:
[FORMULA HERE] /root/XXX/cronjobs/rem-prod.sh
How can we set a formula for "every 5 minutes and 10 seconds" ?
You can do this via timeout. It will kill the process after 10 seconds. It would be better than killing the process externally. Otherwise, jakob22's answer is the best one.
*/5 * * * * /usr/bin/timeout 10 /root/XXX/cronjobs/add-prod.sh
Edit: This is already featured in a comment.

Node schedule run every minute within specific range of hours

I might be overlooking over already-asked-question, but I have not found it yet. Basically, did I do it right in order to execute job for every minute within 9 AM to 6 PM?
schedule.scheduleJob("*/1 9-18 * * *", function Job())
The cron expression should be 0 * 9-18 ? * * *
It reads 0 seconds, every minute, from 9 to 18 every day, every month, every year.
Use cron expression builder for convenience - something like this:
https://www.freeformatter.com/cron-expression-generator-quartz.html

Cron Syntax: run cron job every 10 minutes except for 10th minute

I am having troubles with cron syntax,
I want to run cron job every 10 minutes,but not on 10th minute.
it has to run on 20,30,40,50,00 of the hour, not on 10.
How I do this?
10-59/10 * * * * doesn't work.
Add all times when the Job should be executed
0,20,30,40,50 * * * *

Cron trigger to run at half past the hour every hour

Can anyone suggest a way to set a Cron trigger to run at half past the hour every hour?
So far, I've got one working hourly as per "0 0/60 * * * ?".
Am I looking at "0 0/30 * * * ?" at all?
Mr Morgan.
I would use 30 * * * * to run a command half past every hour.
It is worth remembering that in crontab you define a pattern to match the current time against and not an exact time. Every minute crond will awaken and match the current time against your pattern and if there is a match, run your command.
I recommend using http://www.cronmaker.com/ for painless cron expressions.
Use this:
0 0/30 * * * ?
and not "30 * * * *" as this will trigger in every 30 seconds.
I know this was asked years ago but the correct cron syntax for half past trigger will be:
30 * 1/1 * ? *

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