6 articles
Sift through millions of logs in seconds. Master 'journalctl', the powerful query tool for Systemd. Learn to filter by time, by service, and by priority. Discover how to find exactly what happened during the last boot or a specific hour.
Everything that happens in Linux is recorded. Master the dual architecture of Linux logging. Understand the binary 'Systemd Journal' and the plain-text 'Syslog'. Learn where to find critical logs and how they interact to tell the story of your server.
How does Linux go from a dark screen to a fully functional server? Deconstruct the boot sequence. Understand the difference between BIOS and UEFI, the role of GRUB, and how systemd 'Targets' replace the old Runlevels.
Master the command center of your Linux server. Learn to manage the lifecycle of services using 'systemctl'. Understand the difference between 'restarting' and 'reloading', and learn to enable services so they survive a reboot.
Meet the most important program on your system. Learn the history and architecture of systemd, the modern Init system. Understand why it replaced SysVinit, how it manages dependencies, and the role of PID 1.
How does Linux start? Trace the journey from BIOS/UEFI to the Bootloader, through Kernel Initialization, and finally into systemd. Learn to troubleshoot boot failures and understand the 'initrd' magic.