The cron and at services are used to allow commands to be executed at a later time. How do I restrict them to selected users such as root, opt1, opt2 and so on? How do I make sure user php can run php script but cannot modify or install a new job?
I am on Red Hat Enterprise Linux server. Is there is an easy way to run script or command at boot time after fresh reboot command?
I would like to send an email to email@example.com instead of default system root user for crond service on a Linux or Unix-like system. How do I change the email settings under crontab file on a Linux or Unix-like systems?