The systemctl command is a utility which is responsible for examining and controlling the systemd system and service manager. It is a collection of system management libraries, utilities and daemons which function as a successor to the System V init daemon. The new systemctl commands have proven quite useful in managing a servers services. It provides detailed information about specific systemd services, and others that have server-wide utilization.
Have you ever wanted to review past updates or roll back an update that broke your sites or negatively affected some aspect of your server’s operations? Well, you can accomplish this easily by using the yum history command.
In this article, we are going to discuss what a function is, the ways a function can be used, and how it relates to programming. In essence, a function refers to how the values of one variable parameter relate to the outcome and amount of another parameter.