Services under systemd

Articles

• journalctl — reading the systemd journal — Command for reading the systemd journal with service, time, and other filters.
• ps — list processes — The ps command lists running processes with PID, owner, state, CPU and memory use, and the command line.
• kill — send a signal to a process — The kill command sends a signal to a PID — ask it to exit (TERM), reload settings (HUP), or end it at once (KILL).
• systemd — System and service manager that manages units and their dependencies.
• systemctl — managing systemd services — Command for managing systemd units and inspecting their state.
• nginx — web server and reverse proxy — A web server and reverse proxy whose configuration should be checked before applying changes.