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I need to create a cron job that will run on the every 1st day of the month every minute of this day. I will create it from cpanel.
Any help is appreciated. Thanks
The crontab entry should look like this :
* * 1 * * cmd_to_run
The columns mean
every minute
every hour
1st day of month
every month
any day of week, and then the command.
I'm not sure about cpanel admin
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Closed last year.
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I would like to run a cronjob every 5 hours.
Now it's 11:54pm..
Checking the crontab guru, this 0 */5 * * * seems to be correct, but the site also mentions something like this
next at 2022-01-07 00:00:00
I would like to know why? Does it mean it runs the script no matter what at midnight(00:00:00) ? Doesn't make sense.
The */5 syntax means "every 5 units, starting from 0". So, if you use it in the hour position, it will match hours 0, 5, 10, 15, 20.
I'm assuming what you actually want is a strict 5 hour interval. So after hour 20, you want the next run to be at 20 + 5 hours, so at 1AM not midnight. If that's correct, there isn't an easy way to make cron work like that. It can do even intervals of all divisors of 24 though: every 2 hours, every 3 hours, every 4 hours, every 6 hours, every 12 hours.
To get the 5 hour interval, one possible workaround is to
schedule the cron job to run every hour
at the start of your script that the cron job runs, add extra logic to check if it should run this hour. For example, you could take the current time, and calculate the hours since epoch. And exit early unless the calculated number is divisible by 5.
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Closed 2 years ago.
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I am attempting to run a cron job every minute between 7AM and 12PM the expression I am attempting to use is as follows:
*/1 7-24 * * *
which doesn't appear to run correctly. I am fairly new to writing such expressions, could anyone point me in the right direction for what I am trying to achieve
If you mean every minute between 7:00 and 12:00 (12pm, noon), use this:
* 7-12 * * *
If you want every minute between 7:00 and 24:00 (12am, midnight), use this:
* 7 * * *
Other combinations you can try here: crontab guru
First star already means every minute, so there is no need to manipulate this further.
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Closed 6 years ago.
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I want to run cron job every 2 hours In the X minute
Example:
every 2 hours In the 24 minute
00:24
02:24
04:24
etc.
Put your desired minute in the minute column, and then use */2 in the hour column to get it to run every two hours.
24 */2 * * * <your command>
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My application is running on Linux server, Every three or four days, server time and EST time have different between 2 to 40 seconds. Is there any way to keep sync timing with NTP on daily basis.
The application is running 24X7, so can't reboot everyday to sync. Right now we are manage this problem by set time manually.
Thanks and appreciate.
Add a simple cron job to run ntp at whatever time you wish.
#Set time
0 0 * * * /usr/sbin/ntpdate ntp2.ja.net
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I am using sphinx for searching. I get new data everyday which is added in the database.
I have to add this data into the sphinx search index so that it can be searched. For that I need to reindex the sphinx search index at regular intervals.
How can I set a cron in linux to do so?
a crontab is defined like this:
MIN HOUR DOM MON DOW CMD
so if you want to run a task on a daily basis try:
0 0 * * * /path/to/your/script
that will trigger the launch of your script everyday at 0:00
For more details, see the cron tag wiki