Learn Linux the practical way
Short, hands-on notes on the shell, systemd, networking and system administration.
Shell basics
Navigation, pipes, redirection and the commands you use every day.
File permissions
Users, groups, chmod, chown and the octal notation explained.
systemd services
Write unit files, read journals and manage long-running services.
Networking tools
ip, ss, dig and curl for everyday troubleshooting.
SSH essentials
Keys, config files, agent forwarding and safe defaults.
Text processing
grep, sed, awk and friends for working with logs.