#LearnByFixing
🚀 We are happy to announce the beta version of Learn by Fixing!

www.learnbyfixing.com

Dive into our hands-on troubleshooting scenarios and help shape the platform with your feedback.

#LearnByFixing #Linux #DevOps #SRE #Troubleshooting
Learn by fixing
Learn by Doing. Fix by Understanding. Improve your Linux, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
September 18, 2025 at 4:40 PM
New free guide released! 🚀

Do you want to troubleshoot Linux like a pro? Our latest guide shows you how to inspect system calls using strace, a must-have tool for every SysAdmin, SRE and DevOps engineer.

www.learnbyfixing.com/guides/syste...

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #strace
December 15, 2025 at 1:47 PM
New scenario released! 🚀

www.learnbyfixing.com/scenarios/12/

Imagine you don't know how to quit vi / vim / neovim .
Figure out how to exit without using any vi commands.

Happy fixing!

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #vi #vim #neovim
December 5, 2025 at 10:25 AM
New roadmap released!

You can find our new Kubernetes Troubleshooting Roadmap here:

www.learnbyfixing.com/roadmaps/kub...

It's still a work in progress, but it already has a few scenarios to practice.

#LearnByFixing #DevOps #SRE #kubernetes #k8s
June 16, 2026 at 7:55 AM
🚀 All our guides are now available for free!

🎯 These concise guides provide just the key insights you need to grasp each concept quickly.

👉 Start learning now: www.learnbyfixing.com/guides/

#LearnByFixing #Linux #DevOps #SRE #FreeLearning
October 22, 2025 at 5:35 PM
New features are here! 🚀

We’ve just launched two highly requested improvements:

- Skill-level filtering in Scenarios
- Seamless access using your GitHub account

Ready to dive in and get hands-on? www.learnbyfixing.com/scenarios/

#LearnByFixing #DevOps #SRE #Sysadmin #Linux
January 26, 2026 at 11:09 AM
New scenario released! 🚀

In this scenario, you’ll learn how to:
- Identify which port a program needs to listen on.
- Track down the process that's already listening on that port.

www.learnbyfixing.com/scenarios/14/

Happy fixing!

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #syscalls #strace
December 12, 2025 at 9:17 AM
New scenario released! 🚀

Having the config file for a program is not enough. You also need to put it in the right place.

Check it out and level up your troubleshooting skills: www.learnbyfixing.com/scenarios/13/

Happy fixing!

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #syscalls #strace
December 10, 2025 at 10:25 AM
We are excited to announce the official launch of Learn by Fixing! 🚀

Ready to try it? www.learnbyfixing.com

Happy fixing!

#LearnByFixing #Linux #DevOps #SRE #Sysadmin
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
December 3, 2025 at 10:43 AM
New scenario released! 🚀

A Docker image was built to deploy an app to production… but there’s a problem.

It's over 1 GB.

Your mission: optimize its size to be under 20 MB.

Can you fix it?
www.learnbyfixing.com/scenarios/17/

Happy fixing!

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
March 5, 2026 at 8:51 AM
📱Our labs are now more mobile-friendly!

✅ Redesigned UI

✅ Smoother navigation

✅ Easier to run commands & view outputs

Try them out now 👉 www.learnbyfixing.com

#LearnByFixing #Linux #DevOps #SRE #SysAdmin
Learn by fixing
Learn by Doing. Fix by Understanding. Improve your Linux, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
October 3, 2025 at 9:03 AM
A Docker container can't connect to its own DB, but why?

- DNS resolution?
- Network connectivity?
- Rootless Docker misconfig?
- Or all three at once?

Most container issues aren’t where you think they are.

www.learnbyfixing.com/scenarios/20/

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, Docker, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
April 3, 2026 at 2:06 PM
New guide released: Namespaces and nsenter

It starts from a simple challenge, but every time you solve it, a new constraint is added, and you have to figure out another way to crack it.

www.learnbyfixing.com/guides/names...

#LearnByFixing #DevOps #SRE #Sysadmin #Docker #Linux
Namespaces and nsenter - Learn by Fixing
Troubleshoot namespaces in Linux and Docker containers using nsenter.
www.learnbyfixing.com
April 17, 2026 at 7:50 AM
New guide released: seccomp

www.learnbyfixing.com/guides/secco...

Seccomp reduces a container's attack surface by restricting the system calls a process can make.

If you work with containers, understanding seccomp is a valuable addition to your security toolbox.

#LearnByFixing #DevSecOps #Docker
Seccomp Guide | Learn by Fixing
A guide to seccomp: what it is, how it works in Docker containers, how to use custom seccomp profiles, and how to disable it.
www.learnbyfixing.com
June 23, 2026 at 6:14 PM
Struggling with Docker issues? This new troubleshooting roadmap can help:

www.learnbyfixing.com/roadmaps/doc...

It brings together practical guides and structured skill paths to sharpen your Docker debugging abilities.

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
Docker roadmap - Learn by Fixing
Follow a complete journey from beginner to expert in Docker troubleshooting.
www.learnbyfixing.com
April 23, 2026 at 7:18 AM
Your team has just inherited a legacy Docker image with no docs.

No ports are exposed and the logs are unhelpful.

Right now, the application running inside the container is completely inaccessible.

Can you find and expose the port?

www.learnbyfixing.com/scenarios/21/

#LearnByFixing #Docker
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, Docker, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
April 9, 2026 at 9:39 AM
What is the most effective way to strengthen your troubleshooting skills?

Practice in real scenarios.

We’ve published a GitHub repository with descriptions of all our scenarios, allowing you to explore them and challenge yourself:

github.com/learnbyfixin...
GitHub - learnbyfixing/learnbyfixing: Hands-On Linux and DevOps Challenges. Fix real Linux servers. Practice your troubleshooting skills.
Hands-On Linux and DevOps Challenges. Fix real Linux servers. Practice your troubleshooting skills. - learnbyfixing/learnbyfixing
github.com
March 16, 2026 at 11:25 AM
New scenario released! 🚀

An app was set up locally using Docker Compose... but it doesn't start.

It has 3 services: proxy, app and database.

Can you make it work?

www.learnbyfixing.com/scenarios/19/

Happy fixing!

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, Docker, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
March 12, 2026 at 9:05 AM
New scenario released! 🚀

You tried to start a containerized app, but it doesn't run.

A colleague says it works on their laptop.

Can you make it run without changing the app's code?

www.learnbyfixing.com/scenarios/18/

Happy fixing!

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
March 9, 2026 at 12:02 PM
🚀 Big Update: From Tutorials to Real Challenges

Our labs are now real challenges, featuring:

- A "Check Solution" button
- Optional hints if you get stuck
- Full solution reveal when you're ready

www.learnbyfixing.com

#LearnByFixing #DevOps #SRE #Sysadmin #Linux #Docker
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, Docker, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
February 23, 2026 at 12:26 PM
Instant DevOps Labs: Hands-On & Free! 🚀

Get 15 minutes of real Linux environment practice with genuine scenarios.

No signup. No email. No credit card required.

www.learnbyfixing.com

#LearnByFixing #DevOps #SRE #Sysadmin #Linux #Docker
Learn by fixing
Learn by Doing. Understand by Fixing. Improve your Linux, Docker, DevOps and SRE skills by solving real-world challenges.
www.learnbyfixing.com
January 29, 2026 at 11:03 AM
New scenario released! 🚀

Reload the configuration of a containerized app without restarting the Docker container.

Sounds easy? Not so much when the container uses a distroless image.

www.learnbyfixing.com/scenarios/16/

Happy fixing!

#LearnByFixing #DevOps #SRE #Sysadmin #Docker
January 14, 2026 at 10:08 AM
We have just expanded the Environment Variables guide to include their use in Docker containers:

www.learnbyfixing.com/guides/envir...

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #Docker #Containers #EnvironmentVariables
January 12, 2026 at 1:15 PM
New scenario released! 🚀

You have a verbose Docker container.
Your challenge: make it log ERROR messages only without modifying the image.

Sharpen your Docker skills and try it now:
www.learnbyfixing.com/scenarios/15/

Happy fixing!

#LearnByFixing #Linux #DevOps #SRE #Sysadmin #Docker #Containers
January 9, 2026 at 10:02 AM
New guide released! 🚀

Learn how pipes work and how to connect commands using them.

www.learnbyfixing.com/guides/pipes/

#LearnByFixing #linux #DevOps #shell #pipes
November 17, 2025 at 3:19 PM