selma@pc10:~$ sudo systemctl start apache2
Warning: The unit file, source configuration file or drop-ins of apache2.service changed on disk. Run 'systemctl daemon-reload' to reload units.
selma@pc10:~$ sudo systemctl status apache2
Warning: The unit file, source configuration file or drop-ins of apache2.service
● apache2.service - The Apache HTTP Server
   Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: 
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: active (running) since Thu 2020-12-31 11:54:30 IST; 1min 27s ago
  Process: 9714 ExecStart=/usr/sbin/apachectl start (code=exited, status=0/SUCCE
 Main PID: 9718 (apache2)
    Tasks: 6 (limit: 4425)
   CGroup: /system.slice/apache2.service
           ├─9718 /usr/sbin/apache2 -k start
           ├─9722 /usr/sbin/apache2 -k start
           ├─9723 /usr/sbin/apache2 -k start
           ├─9724 /usr/sbin/apache2 -k start
           ├─9725 /usr/sbin/apache2 -k start
           └─9726 /usr/sbin/apache2 -k start

Dec 31 11:54:30 pc10 systemd[1]: Starting The Apache HTTP Server...
Dec 31 11:54:30 pc10 apachectl[9714]: AH00558: apache2: Could not reliably deter
Dec 31 11:54:30 pc10 systemd[1]: Started The Apache HTTP Server.