You have to escape the % signs. They have a special meaning in crontabs: man (5) crontab: Percent-signs (%) in the command, unless escaped with backslash (\), will be changed into newline characters, and all data after the first % will be sent to the command as standard input.
This will run the command foo at 12:00AM on the first of every month 0 0 1 * * /usr/bin/foo This article describes the various fields, look to the bottom of the page: http://en.wikipedia.org/wiki/Cron To add this to your cron file, just use the command crontab -e
There are a couple of programs that automate this feature, take away the annoyance and potential bugs from doing this yourself, and avoid the stale lock problem by using flock behind the scenes, too (which is a risk if you’re just using touch). I’ve used lockrun and lckdo in the past, but now there’s flock(1) … Read more
Monthly is not frequent enough. This script should run at least weekly, and preferably daily. Remember that certs don’t get renewed unless they are near to expiration, and monthly could cause your existing certs to occasionally be expired already before they get renewed. The name of the program is certbot, which was renamed from letsencrypt. … Read more
Here’s what I did, and it seems to work in this situation. At least, it shows me an error, whereas running from the command line as the user doesn’t show the error. Step 1: I put this line temporarily in the user’s crontab: * * * * * /usr/bin/env > /home/username/tmp/cron-env then took it out … Read more
You’re looking for wp_schedule_event which hooks into the WordPress cron. Cron’s job is to run tasks periodically from the back end.
A simple and dynamic way to use WordPress cron would be to set up an action hook for your schedule then only add scheduled events as and when you need them. The events would call a generic function and pass in your specific custom post type details through $args – add_action(‘my_schedule_event’, ‘generic_function’); function set_schedule($post_id) { … Read more
I believe by default these folders are created by user interaction, however, it’s possible that a plugin may be calling a function to create these monthly upload folders. Note that using this function will create a subfolder in your Uploads folder corresponding to the queried month (or current month, if no $time argument is provided), … Read more
You have got it wrong. The function wp_schedule_event() schedules a action hook with the third argument. So you will need to call your function on the scheduled hook. Like this – add_action( ‘archive_data’, ‘archive_data’ );
There is no way to do that. You need to design a push solution instead of a pull one, and if you can’t and must have to use pull…. well than it sucks to be you :(. Web servers and web software is not designed to be used for “heavy lifting” in such frequent interval. … Read more