In computing the Berkeley Automounter (or amd) is a computer automounter daemon which first appeared in 4.4BSD in 1994. The original Berkeley automounter was created by Jan-Simon Pendry in 1989 and was donated to Berkeley. After languishing for a few years, the maintenance was picked up by Erez Zadok, who has maintained it since 1993. The am-utils package which comprises and is included with FreeBSD, NetBSD, and OpenBSD. It is also included with a vast number of Linux distributions, including Red Hat Enterprise Linux, Fedora Core, ASPLinux, Trustix, Mandriva, and others. The Berkeley automounter has a large number of contributors, including several who worked on the original automounter with Jan-Simon Pendry. It is one of the oldest and more portable automounters available today, as well as the most flexible and the most widely used.

Caveats

There are a few "side effects" that come with files that are mounted using automounter, these may differ depending on how the service was configured.