apt dist-upgrade -> install all of the updates that were found by the sudo apt update command
change host name -> nano etc/hostname then edit the second file nano etc/hosts
installing apache2 -> apt install apache2 apache2-doc apache2-utils
check apache status -> systemctl status apache2
systemctl manages system services using systemd—starting, stopping, enabling, and checking services—so programs run
automatically, reliably, and in the correct order at boot.
system services are background programs that handle core tasks eg networking, logging, and web servers
apt search libapache2-mod -> list all Apache modules that you could install
apt install libapache2-mod-whatever-you-want-to-install