proc_filesystems(5)

✨ /proc/filesystems — supported filesystems (proc_filesystems, section 5 bestie) ✨

okay so this is proc_filesystems(5) from the File Formats Manual, and it's literally one of the most lowkey useful little files on your whole system, no cap 💖

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🌸 NAME 🌸

/proc/filesystems — the list of filesystems your kernel is vibing with rn

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🦋 DESCRIPTION 🦋

💅 /proc/filesystems

bestie. this file is a text listing of the filesystems that are supported by the kernel — and by "supported" we mean the ones that were compiled straight into the kernel, or the ones whose kernel modules are currently loaded 🎀 (also peek at filesystems(5) if you wanna know more, iykyk).

so if a filesystem in there is marked with "nodev", that means it does not need a block device to be mounted — think virtual filesystems, network filesystems, all that ethereal no-physical-hardware-needed energy 🫶 it's giving ✨cloud girlies✨.

fun fact incoming 🙈 incidentally, this file may be used by mount(8) when no filesystem is specified and it didn't manage to determine the filesystem type. in that case, the filesystems contained in this file get tried — excepted those that are marked with "nodev" 💀 so mount(8) is out here just going down the list, no block device allowed, main character energy fr fr.

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🌈 SEE ALSO 🌈

• proc(5)

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and that's the whole page, bestie!! this one came straight out of Linux man-pages 6.20, dated 2026-02-08 — so you know it's fresh 🌸✨ go forth and cat /proc/filesystems responsibly, mwah 💅💖