tmpfs.tech · all tracks · Storage & Disk

Attach a loop device

Storage & Disk · medium · live throwaway Linux box · 3 tiered hints

Create an 8 MiB image file at /opt/blk.img and attach it as a loop device using losetup.

▶ Start this challenge

Nobody has solved this one yet — be the first clear on the leaderboard.

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 Storage & Disk challenges

Files, sizes, mounts, tmpfs, loop devices and recovering from a full disk.

• Add a Sized tmpfs to fstabeasy · in-browser
• Bind-Mount a Directory in fstabeasy · in-browser
• Create a 5 MiB fileeasy
• Create a tarballeasy
• Enable a Swap File in fstabeasy · in-browser
• Extract an archiveeasy
• Find the largest fileeasy
• Is it a mount point?easy

See all Storage & Disk 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.