The documentation says USING CRON <expr> <time_zone> but when I try to do something like 'USING CRON 20 01 * * * IST' I'm getting an error that says
Invalid schedule was specified. "IST" is not a recognized time zone. Please specify time zones accepted by the TIMEZONE parameter.
'USING CRON 20 01 * * * Asia/Kolkata' is the format you're looking for. This is how it's written according to this page
Related
I am trying to understand the crontab timing for the following :
00 */2 * * *
if I understood correctly , this runs every half hour , right ?
From crontab manual
Step values can be used in conjunction with ranges. Following a range with "" specifies skips of the number’s value through the range.
For example, "0-23/2" can be used in the hours field to specify command execution every other hour (the alternative in the V7 standard is
"0,2,4,6,8,10,12,14,16,18,20,22"). Steps are also permitted after an asterisk, so if you want to say "every two hours", just use "*/2".
This runs every two hours.
0 */2 * * *
Following runs every 30 minutes,
30 * * * *
I'm using godaddy hosting and running cron job for codeigniter. That will be running every day at 10am. So in cron tab i tried like this
00 10 * * * export TZ=Asia/Dhaka; wget http://www.example.com/function
00 10 * * * TZ=Asia/Dhaka; wget http://www.example.com/function
00 10 * * * export TZ=Asia/Dhaka; /usr/bin/curl "http://www.example.com/function"
Always those command executing on others timezone maybe UTC timezone but i need Asia/Dhaka timezone UTC +6:00.
How do i write correct timezone command and where to write it?
Godaddy Cron Tab Look Like this
If you're using PHP, you can figure out both what time is it at your server and in what timezone you're at:
echo date('c');
It'll output something like:
2017-08-15T02:40:09+00:00
The above answers didn't help me, they both gave me the date / time for the domain, but not for cron job. What helped me to determine the cron job schedule is:
Take your IP address from cpanel
Google where it's located by searching IP xxx.xxx.xxx.xxx
Google time in that city / country
You have determined your timezone
C-Panel cron job manager does not show the current time at the server. When account is set up, it is done on a specific server that resides in a specific timezone. You need to find out what that timezone is and then set the schedule based on that timezone. You can run a
echo date("D M d, g:i A", time())
function in php to tell you. Then set your schedule.
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 ...