i was trying to make a code to automatically send mails from a server. I want it to run a php everytime at every hour and 15 minutes and 30 minutes.
Example at 08:15, 08:30, 09:15, 09:30, etc..
Thank you,
Daniel!
How about this?
15-30/15 * * * * * php foo.php
Obviously, replace php foo.php with the command you'd like to run. The 15-30/15 syntax indicates: minutes 15 through 30, with increments of 15. This will make your job run every hour at xx:15 and xx:30.
Related
I want to set a cron job to run at 00h15 every Friday. Is this the correct way to do this:
15 0 * * 5
Use this kind of website to validate your crons:
http://crontab.guru/#15_0___5
I am able to schedule using this cron expression using nodejs cron-job every one hour (starting from "now").
But I need to set q cron every one hour starting from a specific time. E.g let's say starts from 3:30 AM. can this be done?
The / character allows you to give two expressions to a cron part. The first is a "starting at" argument and the second is "every X units". So, a cron that will run every hour, starting at 03:30 (I.e., at 03:30, 04:30, 05:30, etc.) would look like this:
0 30 3/1 * * * *
You can try this:
30 3/1 * * * * *
Just to add to Mureinik's answer, just "starting at" on the first argument is non-standard and it may not work with every cron. The standard format should be
startingAt-endingAt/forEvery
example: 30 3-23/1 * * *
WHat does the following line mean in Linux - Chrone Time Scheduling
18 06,12,18 * *
Is it it will run 6.18 am, 12.18 pm and 6.18 pm every day for all month of all week.?
Check it out in manual page for crontab, either online or by typing man 5 crontab in terminal.
It means that the command will run at 6:18, 12:18 and 18:18 every day.
Also, I think you're missing one asterix (*) - there should be five time and date fields, and you've got only four (although, in post title, you've got five). Anyway, the full definition would look like:
18 06,12,18 * * *
You can test your cron job on cron job generator site page.
This is very helpful.
Just select whatever options you want for cron job and generate the code.
I have a strange problem. I have a cron set up to check a database for a given date that is entered. If today's date matches the db recond, it supposed to change a value in a db table.
now, for some reason if the cron is set to go off every minute, it works like a charm. If it's set to a certain time, it doesn't fire at all.
(MYDOMAIN is set to the proper domain. )
works with:
* * * * * php -q /var/www/vhosts/MYDOMAIN.com/httpdocs/admin/scripts/includes/check_date.php
doesn't work with:
40 16 * * * php -q /var/www/vhosts/MYDOMAIN.com/httpdocs/admin/scripts/includes/check_date.php
or any variation of that time
any idea why it wont fire on anything else then every minute?
Check that your system time matches the timezone you are expect it to fire in by running
date
Did you try 59 23 * * * ? try the last minute of the day. Maybe the script only works late in the day ...
I am using Quartz Scheduler using Spring. I want to configure the same with following schedule:
Run Job Every 10 minutes starting NOW
I am using following expression for the same.
0 */10 * * * ?
I thought * in the minutes field would make it run the first minute, but it does not do that way. It runs the first 10th minutes from now and then every 10 minutes afterwards.
Can anybody please suggest me the reason for this behavior and the solution to my problem also?
0 0/10 * 1/1 * ? *
Please see : http://www.cronmaker.com/
check the minute your at now and add them as a list to your crontrigger. if you start the trigger at minute 12 for example add
0 2,12,22,32,42,52 * * * ?
as your cron expression
Edit:
Another solution would be to define a simpletrigger that repeats every ten minutes
SimpleTrigger trigger = new SimpleTrigger("myTrigger",
null,
new Date(),
null,
SimpleTrigger.REPEAT_INDEFINITELY,
10L * 60L * 1000L);
You can use something like
0 1-59/10 * * * ?
That will trigger the job at any minute and 10 minutes after that. I didn't try it but it looks right. :)
*/10 * * * *
Every 10 minutes starting from the moment you create the cron job, wether you prefer (user crontab, /etc/cron.d/, ...).