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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I want to run a PHP script from cron. I setup cron with:
*/1 * * * * php /var/www/html/cron/cron_job.php
And I can see it in crontab -u root -l, but the job is not executed. It also doesn't work when I run the command directly from the command line like this:
crontab -u root -l
I tried many answers related to cron but nothing worked. For example:
/usr/local/bin /var/www/html/cron/cron_job.php /usr/local/bin/php /var/www/html/cron/cron_job.php sudo php -f /var/www/html/cron/cron_job.php
The testing php script (cron_job.php) is:
cron_job.php
php file_put_contents ('test.txt',"test content\n",FILE_APPEND);
File permissions are all OK and it is working when run in the browser or when opening a terminal in /var/www/html/cron/ and running php cron_job.php.
/var/www/html/cron/
php cron_job.php
As requested in the comments, if I append 2> /tmp/php.log to php /var/www/html/cron/cron_job.php use a script with a syntax error and try to run (php /var/www/html/cron/cron_job.php 2> /tmp/php.log) from menu terminal, then the error log gets the error message.
2> /tmp/php.log
php /var/www/html/cron/cron_job.php
php /var/www/html/cron/cron_job.php 2> /tmp/php.log
Your script is almost certainly running and creating your file. It's just not creating it where you expect it to be. You are not using any path in your script, you just use a file name. This means that the file will be created in the directory the script is running in.
That's why, when you move into a specific directory and run the script there, you think it works. Because the file is created in the directory you ran it in and so you can see it. By default, cron runs in the home directory of the user running it. Since this is root's crontab (which, by the way, is a bad idea), the file will be created in /root. So, go check:
cron
/root
sudo ls /root/test.txt
So, next time, give your script a full path instead of just a file name:
Now, the file will be created in /path/to.
/path/to
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