proc_filesystems(5) File Formats Manual proc_filesystems(5) NAME /proc/filesystems - supported filesystems DESCRIPTION /proc/filesystems A text listing of the filesystems which are supported by the kernel, namely filesystems which were compiled into the kernel or whose ker- nel modules are currently loaded. (See also filesystems(5).) If a filesystem is marked with "nodev", this means that it does not re- quire a block device to be mounted (e.g., virtual filesystem, net- work filesystem). Incidentally, this file may be used by mount(8) when no filesystem is specified and it didn't manage to determine the filesystem type. Then filesystems contained in this file are tried (excepted those that are marked with "nodev"). SEE ALSO proc(5) Linux man-pages 6.18 2026-02-08 proc_filesystems(5)