automount - configure mount points for autofs
automount [options] mount-point map-type[,format] map [map-options]
The automount program is used to configure a mount point for autofs, the inlined Linux
automounter. automount works by taking a base mount-point and map file, and using these
(combined with other options) to automatically mount filesystems within the base mount-
point when they are accessed in any way. The filesystems are then autounmounted after a
period of inactivity.
Write the pid of the daemon to the specified file.
Set the minimum timeout, in seconds, until directories are unmounted. The default
is 5 minutes. Setting the timeout to zero disables unmounts completely.
Display the version number, then exit.
automount takes at least three arguments. Mandatory arguments include mount-point, map-
type and map. Both mandatory and optional arguments are described below.
Base location for autofs-mounted filesystems to be attached. This is a directory
name which must already exist.
Type of map used for this invocation of automount. The following are valid map
file The map is a regular text file.
The map is an executable program, which is passed a key on the command line
and returns an entry on stdout if successful.
yp The map is a NIS (YP) database.
The map is a NIS+ database.
hesiod The map is a hesiod database whose filsys entries are used for maps.
ldap map names are of the form [servername:]basedn, where the optional servername
is the name of the LDAP server to query, and basedn is the DN to do a sub-
tree search under. Entries are automount objects in the specified subtree,
where the cn attribute is the key (the wildcard key is "/"), and the auto-
mounterInformation attribute contains the information used by the auto-
mounter. Documentation on the schema used by this module is available
online at http://docs.iplanet.com/docs/manuals/directory/411ext/nis/map-
format Format of the map data; currently the only formats
recognized are sun, which is a subset of the Sun automounter map format, and hes-
iod, for hesiod filesys entries. If the format is left unspecified, it defaults to
sun for all map types except hesiod.
map Location of mapfile to use. This is an absolute UNIX pathname in the case for maps
of types file or program, and the name of a database in the case for maps of type
yp, nisplus, or hesiod.
Any remaining command line arguments without leading dashes (-) are taken as
options (-o) to mount. Arguments with leading dashes are considered options for
If the automount daemon catches signal USR1, it will unmount all currently unused autofs-
mounted filesystems and continue running (forced unmount.) If it catches signal USR2 it
will unmount all unused autofs-mounted filesystems and exit if all filesystems were
unmounted. Busy filesystems will not be unmounted.
A whole slew of missing desirable features (see TODO file).
The documentation leaves a lot to be desired.
Please report other bugs along with a detailed description to <email@example.com>.
To join this mailing list, send a message with the line "subscribe autofs" to <major-
H. Peter Anvin <firstname.lastname@example.org>
19 Jun 2000 AUTOMOUNT(8)