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