Storage & Disk · pro · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/mkxfs.sh: a bash script that creates an XFS filesystem on /dev/sdb1, labelled data, then verifies it. Use set -euo pipefail, run mkfs.xfs with the -f force flag and -L data label on /dev/sdb1, and afterwards print the geometry with xfs_info on the same device. Start with a bash shebang. (Authored config, graded structurally — the engine isn't run here.)
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Open the challenge and an in-page editor appears — write your answer and tmpfs.tech grades it server-side against the same checks a real box would run. No VM, no install, no signup needed to try.
Files, sizes, mounts, tmpfs, loop devices and recovering from a full disk.
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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.
How is it graded? Automatically and deterministically — your work is checked against the exact rules the live box would apply.