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Beginner Topic 2 of 50 DevOps & Tooling

Linux File System Layout

Standard directories and their purposes.

How it works

Linux presents one tree rooted at /, and the Filesystem Hierarchy Standard gives each directory a purpose. /etc holds system configuration, /home holds user files, /var holds changing data such as logs and caches, /usr holds installed programs and libraries, /bin and /sbin hold essential commands, /tmp holds temporary files, /dev exposes devices as files, and /proc and /sys expose live kernel and process information. Other disks and network shares are mounted onto directories rather than getting drive letters.

Where it is used

Knowing the layout tells you where to find logs in /var/log, edit configuration in /etc, place application data and check disk usage by mount point.

Common pitfall

Mixing user data into system directories makes upgrades and backups hard, and filling /var or /tmp can crash a server. Keep application data on its own path or volume and monitor disk space on every mount.

Where it fits in the course

Linux File System Layout is topic 2 of 50 in DevOps & Tooling, rated Beginner. It follows Command Line Basics. The next topic is File Permissions.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the DevOps & Tooling quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Linux File System Layout?
Standard directories and their purposes. It belongs to DevOps & Tooling and is a beginner-level topic.
Where do people use Linux File System Layout?
Knowing the layout tells you where to find logs in /var/log, edit configuration in /etc, place application data and check disk usage by mount point.
What is the most common mistake with Linux File System Layout?
Mixing user data into system directories makes upgrades and backups hard, and filling /var or /tmp can crash a server.
What should I learn before this topic?
Start with Command Line Basics, the topic just before it in DevOps & Tooling.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the DevOps & Tooling quiz.
Is Linux File System Layout hard to learn?
It is a Beginner topic, so it works as an entry point. If the terms are new, read the explanation twice and try the visualizer before the quiz.
How long does it take to learn Linux File System Layout?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Linux File System Layout?
Command Line Basics, File Permissions, Text Editors and IDEs are closely connected. The full list is in the related topics section of this page.
What should I study after Linux File System Layout?
Continue with File Permissions, the next topic in DevOps & Tooling.

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