---
name: "autounmountd"
section: "8"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/autounmountd"
---

# autounmountd(8)

daemon unmounting automounted filesystems

## NAME

**autounmountd** – daemon unmounting automounted filesystems

## SYNOPSIS

**autounmountd** \[**-d**\] \[**-r** *time*\] \[**-t** *time*\] \[**-v**\]

## DESCRIPTION

The **autounmountd** daemon is responsible for unmounting filesystems mounted by [automountd(8)](/automountd/8.md). On startup, **autounmountd** retrieves a list of filesystems that have the automounted mount option set. The list is updated every time a filesystem is mounted or unmounted. After a specified time passes, **autounmountd** attempts to unmount a filesystem, retrying after some time if necessary.

These options are available:

- **-d**

  Debug mode: increase verbosity and do not daemonize.

- **-r**

  Number of seconds to wait before trying to unmount an expired filesystem after a previous attempt failed, possibly due to filesystem being busy. The default value is 600, or ten minutes.

- **-t**

  Number of seconds to wait before trying to unmount a filesystem. The default value is 600, or ten minutes.

- **-v**

  Increase verbosity.

## EXIT STATUS

The **autounmountd** utility exits 0 on success, and \>0 if an error occurs.

## SEE ALSO

[auto\_master(5)](/auto_master/5.md), [autofs(5)](/autofs/5.md), [automount(8)](/automount/8.md), [automountd(8)](/automountd/8.md)

## HISTORY

The **autounmountd** daemon appeared in FreeBSD 10.1.

## AUTHORS

The **autounmountd** was developed by Edward Tomasz Napierala ⟨*trasz@FreeBSD.org*⟩ under sponsorship from the FreeBSD Foundation.