systemd — #3: Using the systemctl command to manage systemd units
Units are the basis of everything in systemd so we’ll explore them in more detail and use the systemctl command to investigate and manage units.
systemd — #2: Understanding Linux startup with systemd
systemd’s startup provides important clues to help you solve problems when they occur.
systemd — #1: Learning to love systemd
systemd is the mother of all processes, responsible for bringing the Linux host up to a state where productive work can be done.
How I used journalctl to Determine the Source of an Electrical Problem
The journalctl command can extract interesting data from the systemd journals. I never thought it could help with hardware electrical problems – until I tried it.
Linux Boot and Startup
Understanding the boot and Linux startup processes is important to being able to both configure Linux and to resolving startup issues.