defencia/knowledge/linux
Intro · Packages · Terminal

Linux

If you have never used Linux, getting started takes a little work — but it is free, light on resources, and a multitool for DFIR once you learn the terminal.

Free / OSSDebian-based

Intro to Linux

If you have not used Linux, getting started takes a little extra work — but there is plenty of help online and most things are easier than they look. Linux is free and open source, needs fewer resources than Windows, and can breathe life into an old PC.

Packages

Linux ships many distributions differing in look and installed software (called packages). Package management differs per distro — RPM (Red Hat Package Manager) and DPKG (Debian) are the two main families. The course uses Debian-based Linux (Ubuntu, Linux Mint, Debian, REMnux).

The terminal

The terminal — the Command Line Interface (CLI) — is where Linux shows its power, and for many it is a learning curve: new commands, flags and ways of working in a text box.

lablo@linuxserver$ sudo apt-get update
A typical terminal prompt and an update command.