Linux Luminarium

cse365-f2024

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This module will gently teach you how to use the Linux command line interface, and incept some core Linux concepts along the way. Access the challenges, and accompanying material at the Linux Luminarium dojo.

Intro to Commands

Intro to Arguments

The Root

Program and absolute paths

Position thy self

Position elsewhere

Position yet elsewhere

implicit relative paths, from /

explicit relative paths, from /

implicit relative path

home sweet home

cat: not the pet, but the command!

catting absolute paths

more catting practice

grepping for a needle in a haystack

listing files

touching files

removing files

hidden files

An Epic Filesystem Quest

making directories

finding files

linking files

Learning From Documentation

Learning Complex Usage

Reading Manuals

Searching Manuals

Searching For Manuals

Helpful Programs

Help for Builtins

Matching with *

Matching with ?

Matching with []

Matching paths with []

Mixing globs

Exclusionary globbing

Redirecting output

Redirecting more output

Appending output

Redirecting errors

Redirecting input

Grepping stored results

Grepping live output

Grepping errors

Duplicating piped data with tee

Writing to multiple programs

Split-piping stderr and stdout

Printing Variables

Setting Variables

Multi-word Variables

Exporting Variables

Printing Exported Variables

Storing Command Output

Reading Input

Reading Files

Listing Processes

Killing Processes

Interrupting Processes

Suspending Processes

Resuming Processes

Backgrounding Processes

Foregrounding Processes

Starting Backgrounded Processes

Process Exit Codes

Changing File Ownership

Groups and Files

Fun With Groups Names

Changing Permissions

Executable Files

Permission Tweaking Practice

Permissions Setting Practice

The SUID Bit

Becoming root with su

Other users with su

Cracking passwords

Using sudo

Chaining with Semicolons

Your First Shell Script

Redirecting Script Output

Executable Shell Scripts

The PATH Variable

Setting PATH

Adding Commands

Hijacking Commands