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Master Linux package management: install, update, and remove software with apt, snap, and dpkg. Manage repositories, resolve dependencies, and fix common package errors - essential skills for every DevOps engineer.
Master Linux networking: configure network interfaces with ip and nmcli, check open ports with ss, set up firewalls with ufw, and troubleshoot connectivity. Essential DevOps skills for managing servers.
Master systemd: manage services with systemctl, view logs with journalctl, create custom service files, and automate tasks with timers.
Master Linux text processing tools: grep for searching, sed for editing, awk for data extraction. Parse logs, transform text, and automate data processing.
Master Linux process management: view processes with ps/top/htop, control jobs with fg/bg/kill, and understand process signals for system administration.
Master Linux file permissions: read, write, execute. Learn chmod (numeric and symbolic), chown, chgrp, umask, and special bits for production security.
Start with Lesson 1 and work your way down. Each lesson builds on previous knowledge. Take your time and practice each concept!