SadServers
Fix a broken Linux server in your browser before the timer runs out
SadServers gives you a broken Linux server and a time limit. You get a terminal in the browser on a fresh virtual machine, read the task, and work out what is wrong. When you think it is fixed, you press a button and an automatic check tells you if you solved it. You can reveal clues one by one if you get stuck.
Freemium · No login · Browser · Intermediate
About SadServers
Scenarios cover Linux and Bash, web servers, databases, Docker, Kubernetes, CI/CD and more, at easy and medium levels. They suit DevOps engineers, SREs and people preparing for job interviews.
Some scenarios run with no sign-up, others need a free account, and many need a paid Pro plan. The free plan has daily limits. Companies also use the site to train teams and test job candidates.
On Breakpoint since 23 Oct 2026.