opendarwin man page for umount

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

NAME
     umount -- unmount filesystems

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

DESCRIPTION
     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 filesystem 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 spec-
	     ified 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.

FILES
     /etc/fstab  filesystem table

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

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

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