Generally, an application process’ lifecycle has three main states: start, run, and stop. Each state can and should be managed carefully if we want to be competent administrators. These eight commands can be used to manage processes through their lifecycles.
Starting a process
The easiest way to start a process is to type its name at the command line and press Enter. If you want to start an Nginx web server, type nginx. Perhaps you just want to check the version.
