Linux
Linux is modular. There are many choices for each part.
Display Manager (login manager)
GUI to display at the end of the boot process, in place of the default shell. It’s intended to display a Login form to begin a User session.
Display Server
A display server or window server is a program whose primary task is to coordinate the input and output of its clients to and from the rest of the operating system, the hardware, and each other. — Wikipedia
ie.
Desktop Environment
- KDE, Gnome, Xfce
systemd
systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system. systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. — Arch Wiki: systemd
Package Manager
Arch Linux comes with pacman, to install packages such as applications, i.e.:
pacman -S slack
Flag:
- -S install package