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OpenDarwin 7.2.1 - man page for umount (opendarwin section 8)

UMOUNT(8)			   BSD System Manager's Manual				UMOUNT(8)

     umount -- unmount filesystems

     umount [-fv] special | node
     umount -a | -A [-fv] [-h host] [-t type]

     The umount command calls the unmount(2) system call to remove a special device or the remote
     node (rhost:path) from the filesystem tree at the point node.  If either special or node are
     not provided, the appropriate information is taken from the fstab(5) file.

     The options are as follows:

     -a      All the filesystems described in fstab(5) are unmounted.

     -A      All the currently mounted filesystems except the root are unmounted.

     -f      The filesystem is forcibly unmounted.  Active special devices continue to work, but
	     all other files return errors if further accesses are attempted.  The root filesys-
	     tem cannot be forcibly unmounted.

     -h host
	     Only filesystems mounted from the specified host will be unmounted.  This option is
	     implies the -A option and, unless otherwise specified with the -t option, will only
	     unmount NFS filesystems.

     -t type
	     Is used to indicate the actions should only be taken on filesystems of the specified
	     type.  More than one type may be specified in a comma separated list.  The list of
	     filesystem types can be prefixed with ``no'' to specify the filesystem types for
	     which action should not be taken.	For example, the umount command:

		   umount -a -t nfs,hfs

	     umounts all filesystems of the type NFS and HFS.

     -v      Verbose, additional information is printed out as each filesystem is unmounted.

     /etc/fstab  filesystem table

     unmount(2), fstab(5), mount(8)

     A umount command appeared in Version 6 AT&T UNIX.

4th Berkeley Distribution		   May 8, 1995			4th Berkeley Distribution

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