systemd is a vital init system that is integrated tightly with many popular Linux distributions out there. It provides a system and service manager that runs just after the Linux kernel initializes, acting as the first process on boot (PID 1).It has had its share of controversies, but it is undoubtedly one of the most crucial building blocks of a Linux system.Of similar significance is sudo, a program that many of you might already be aware of. It lets users with a lower level of security privil...