[Learn](https://codetrain.ai/learn/) / [Command the Terminal: Linux & Bash](https://codetrain.ai/learn/bash-intro/)

# Text & pipes

Text & pipes, a hands-on class in Command the Terminal: Linux & Bash. A class in Command the Terminal: Linux & Bash. Free to start, no card.

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## Curated lessons in this class

### Linux Filesystem Fundamentals

bash · 5 steps · free

Practice the fundamentals of the Linux filesystem.

1. Navigate and list files with absolute and relative paths
2. Understand file permissions and ownership
3. Explore inodes and hard links
4. Work with symbolic links and understand their behavior
5. Inspect filesystem structure and disk usage

[Start this lesson](https://codetrain.ai/app/study/?lesson=linux-filesystem-fundamentals)

## Also coming to this class

Redirectsgrep, sed & awkPermissions

## How CodeTrain teaches this

No videos and no multiple-choice quiz at the end. Each lesson is a handful of small steps in a real editor. You type the code yourself, it runs, and the tutor reviews what you actually wrote. It will not hand you the answer, and the step doesn't advance until your code passes. What you get at the end is a record of which steps you wrote unaided, not a completion percentage.

## These curated courses are the starting point, not the product

Everything in this catalog is a **curated** course we wrote by hand. They exist so there is something to start on. What CodeTrain actually does is build a lesson on demand: name **any topic** you want to understand and it writes one for you on the spot, or paste **any public repository** and it teaches you that codebase from the code that is really in it. You are not limited to the list below, and most people stop using it within a session or two.

## The rest of Command the Terminal: Linux & Bash

[First commands](https://codetrain.ai/learn/bash-intro/sh-first/)

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