Tux NotesTux Notes
Practical Linux lessons for students and curious tinkerers.
These notes started as handouts for a small weekend study group. Each lesson is short, hands-on and meant to be read next to a terminal.
- Package management on Debian and Ubuntu
Installing, upgrading and cleaning up software with apt.
- Writing your first Bash script
Turn a sequence of commands you type every day into a small, reliable script.
- Networking basics: ip, ss and dig
Three small tools answer most "why can't I connect?" questions.
- Managing services with systemd
Most modern distributions use systemd to start, stop and supervise background services.
- File permissions explained
Read, write and execute bits are the foundation of Linux security. Here is how to read them and change them safely.
- Getting comfortable with the shell
The terminal looks intimidating at first, but a handful of commands covers most daily work.