Filesystem in Userspace

lastmod 2026-02-03created 2025-11-133 edits

Filesystem in Userspace is a software interface for Unix and Unix-like computer operating systems that lets non-privileged users create their own file systems without modifying kernel code. This is done by running the file system code in user space, while the FUSE module only provides a bridge to the actual kernel interfaces.

FUSE is available for Linux, FreeBSD, OpenBSD, NetBSD, OpenSolaris, Minix 3, macOS, and Microsoft Windows.

FUSE is free software distributed under the GNU General Public License and the GNU Lesser General Public License.

Troubleshooting

Ubuntu 24.04 fails to boot right after installing fuse

• Ubuntu 24.04 (24.04.1) fails to boot after installing Fuse — Troubleshooting collection

Enter recovery mode from the GRUB screen, then run Network -> run a root shell

It worked after the following command:

apt install ubuntu-desktop

See also

• Linux
• Security
• 9P

Favorite site

• Filesystem in Userspace - Wikipedia
• Github - libfuse/libfuse - The reference implementation of the Linux FUSE (Filesystem in Userspace) interface
• Using FUSE - It's awesome