tmpfs.tech · all tracks · General Linux

Create a group

General Linux · easy · live throwaway Linux box · 3 tiered hints

Create a group named 'devs'.

▶ Start this challenge

Fastest verified solves

• loako29s · ✦ no hints
• Almogk30s · ✦ no hints
• snail113231s · ✦ no hints
• grenlan33s · ✦ no hints
• quack36s · ✦ no hints

How it works

Press start and you get your own real, disposable Linux VM — in the browser terminal or over SSH. Work the task on a live system; tmpfs.tech grades your solution automatically against the actual machine state, then throws the box away. No install, free to try as a guest.

More General Linux challenges

Core Linux fundamentals: files, users, groups, permissions and everyday administration.

• Add a Directory to the Global PATHeasy · in-browser
• Add a global env vareasy
• Add a usereasy
• Add user to a groupeasy
• Append a lineeasy
• Author the Loopback /etc/hostseasy · in-browser
• Clean up a stray fileeasy
• Copy a directory treeeasy

See all General Linux challenges →

FAQ

Is it free? Yes — play as a guest, no signup required to start.

Do I need to install anything? No. Everything runs in your browser, or connect over SSH if you prefer your own terminal.

How is it graded? Automatically and deterministically — your work is checked against the real state of the machine you worked on.