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28 .\" @(#)umount.8 8.2 (Berkeley) 5/8/95
29 .\" $FreeBSD: src/sbin/umount/umount.8,v 1.7.2.3 2001/12/14 15:17:57 ru Exp $
30 .\" $DragonFly: src/sbin/umount/umount.8,v 1.2 2003/06/17 04:27:34 dillon Exp $
37 .Nd unmount filesystems
54 system call to remove a
56 or the remote node (rhost:path) from the filesystem tree at the point
62 are not provided, the appropriate information is taken from the
66 The options are as follows:
67 .Bl -tag -width indent
69 All the filesystems described in
73 All the currently mounted filesystems except
74 the root are unmounted.
80 The filesystem is forcibly unmounted.
81 Active special devices continue to work,
82 but all other files return errors if further accesses are attempted.
83 The root filesystem cannot be forcibly unmounted.
85 Only filesystems mounted from the specified host will be
87 This option implies the
89 option and, unless otherwise specified with the
91 option, will only unmount
95 Is used to indicate the actions should only be taken on
96 filesystems of the specified type.
97 More than one type may be specified in a comma separated list.
98 The list of filesystem types can be prefixed with
100 to specify the filesystem types for which action should
106 .Bd -literal -offset indent
110 unmounts all filesystems of the type
114 that are listed in the
118 Verbose, additional information is printed out as each filesystem
122 .Bl -tag -width PATH_FSTAB
124 If the environment variable
126 is set all operations are performed against the specified file.
129 .Bl -tag -width /etc/fstab -compact