Linux Handbook
An independent, reader-supported publication focusing on Linux Command Line, Server, Self-hosting, DevOps and Cloud Learning
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Latest posts
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LHB Linux Digest #26.17: SSH Config, Docker Compose Override, Bash History Tricks and More
Type less, connect faster.
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LHB Linux Digest #26.16: Bash Arrays, mapfile, Self-hosted Linear Alternative and More
One variable, many values.
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LHB Linux Digest #26.15: Taming stderr, Cybersecurity Certification and More
Errors are output too. Learn where they go.
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Learn SSH
SSH is how you log in to and work on remote Linux machines. Start with the basics, then secure your setup and fix the errors you are most likely to run into.
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LHB Linux Digest #26.14: Free CTF, Special Permissions, Process Substitution and More
Time to challenge yourself and test your Linux command line knowledge.
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Command Conqueror
Ten Linux command line puzzles, from hidden files to SUID privilege escalation. Free, no account needed, runs in Docker on your computer.
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Link Your CTF Handle to Your Linux Handbook Account
Link your Linux Handbook CTF handle to your account to keep it on every computer and unlock members-only games.
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Linux CTF Challenges
Free capture-the-flag games that test your Linux command line skills. No account needed. The levels run in Docker on your own computer.
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LHB Linux Digest #26.13: Know Your File, File-based Workspace Certifications and More
Sometimes the fastest fix is just asking the right question first.
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LHB Linux Digest #26.12: Demystifying diff, Process Substitution, History Trick, and More
Keep on Linux-ing :)
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LHB Linux Digest #26.11: New Free Course, Named Pipes, Multi-kernel and More
Enjoy the new course
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Chapter 9: Your First Tmux Configuration
At this point, you can create sessions, organize them with windows, split windows into panes, navigate between them, resize and zoom panes, search terminal history, and build a complete tmux workspace. So why configure tmux at all? The answer is simple. After using tmux for a…
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Chapter 8: Build a Real Tmux Workflow
So far, you have learned the individual building blocks of tmux. You know how to create sessions, organize work with windows, split windows into panes, move between panes, resize them, and use copy mode to work with terminal output. But knowing these features separately is…
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Chapter 7: Copy Mode - Scroll, Search and Copy Terminal Output
So far, you've learned how to organize your tmux workspace using sessions, windows, and panes. But there's one problem you'll run into very quickly. Your terminal can produce a lot of output. Maybe you're checking application logs. Maybe a command printed hundreds
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Chapter 6: Panes - Split, Navigate, Resize and Zoom
In the previous chapter, you learned how to use windows to organize different tasks inside a tmux session. Now let's make those windows more useful. Imagine you are working on a server and want to watch your application logs while running commands at the same time. Opening…
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Chapter 5: Windows - Organize Your Work Inside a Session
In the previous chapter, you learned how to create, name, detach, and reattach tmux sessions. Now you already have the main workspace. But imagine you're working on a project and need to do several things at once. You want one terminal for your application, another for logs,…
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Chapter 4: Sessions - Create, Name, Detach and Reattach
So far, you have installed tmux, started your first session, and learned how the prefix key works. Now we get to the feature that makes tmux genuinely useful. Sessions. A tmux session is a workspace that can keep running even after you leave it. This is what allows you to
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Chapter 3: The Tmux Prefix Key & Essential Shortcuts
In the previous chapter, you started tmux and saw that it still feels like a normal terminal. You can run commands, work with files, and use your shell just as you normally would. Now you need a way to tell tmux: "I want you to do something, not my
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Chapter 2: Get Tmux Running
In the previous chapter, we looked at the problem tmux solves and why persistent terminal sessions are useful, especially when working over SSH. Now it's time to actually use tmux. In this chapter, we'll install tmux on your system, verify that everything is working, start your
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Chapter 1: Why Tmux? Understanding Terminal Multiplexing
If you have ever run a long command over SSH and lost it because your connection dropped, you already understand the pain tmux solves. Tmux is a terminal multiplexer. In plain language, it lets you run and manage multiple terminal workspaces inside one terminal environment, and…