service vs. systemctl in Linux: What Are the Differences
If you want to know more about init systems, it's important to first understand the systemctl and service commands and their underlying differences.
service and systemctl are both vital and extremely similar commands in Linux. They’re so similar that it’s easy to wonder what differences there are between them at all—and whether you can use the two commands interchangeably.
Knowing the finer details about service and systemctl will allow you to work with them seamlessly.
In Linux, the service command is a wrapper script that allows users to easily configure and interact with system services. It precedes systemd and primarily works with the scripts found in /etc/init.d.