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

NAME

umount -- unmount filesystems

SYNOPSIS

umount [-fv] special | node umount -a | -A [-F fstab] [-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 fstab Specify the fstab file to use. -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 implies the -A option and, unless other- wise specified with the -t option, will only unmount NFS filesys- tems. -t type Is used to indicate the actions should only be taken on filesys- tems 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,mfs unmounts all filesystems of the type NFS and MFS that are listed in the fstab(5) file. -v Verbose, additional information is printed out as each filesystem is unmounted.

ENVIRONMENT

PATH_FSTAB If the environment variable PATH_FSTAB is set all operations are performed against the specified file.

FILES

/etc/fstab filesystem table

SEE ALSO

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

HISTORY

A umount command appeared in Version 6 AT&T UNIX. DragonFly 4.1 May 8, 1995 DragonFly 4.1