# Filesystem hierarchy

## Linux {#linux}

### FHS {#fhs}

The [Filesystem Hierarchy Standard](!W) is used by many Linux distributions.

- [Official website](https://refspecs.linuxfoundation.org/fhs.shtml) (version 3)
- [Historical official website](https://refspecs.linuxfoundation.org/fhs.shtml) (version 2.3)

### systemd {#systemd}

[systemd](!W) has its own filesystem hierarchy standard, [file-hierarchy](https://www.freedesktop.org/software/systemd/man/latest/file-hierarchy.html).

## BSDs {#bsd}

- [FreeBSD](!W): [hier(7)](https://man.freebsd.org/cgi/man.cgi?query=hier&apropos=0&sektion=7arch=default&format=html)
- [NetBSD](!W): [hier(7)](https://man.netbsd.org/hier.7)
- [OpenBSD](!W): [hier(7)](https://man.openbsd.org/hier)

## Page metadata

URL: <https://dbohdan.com/hier.md>

Published 2025-10-24, updated 2025-10-24.

Tags:

- BSD
- bookmarks
- filesystem
- Linux
- sysadmin
- Unix