how to make cron?
 

i want to make a cron to execute a file "test.php"
i want to execute it at 04:00 every day,how can i do it on my redhat 9?

crontab -e
0 04 * * * /your/php/file/test.php
hit :wq to save and exit
restart cron, service crond restart or reboot.

how to restart cron?
i don't know cron.so i hope the detail operation?thanks