MirBSD manpage: umount(8)

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

NAME

     umount - unmount filesystems

SYNOPSIS

     umount [-fv] special | node
     umount -a [-fv] [-h host] [-t ufs | lfs | external_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 neither special nor node are provided, the appropriate in-
     formation is taken from the fstab(5) file.

     The options are as follows:

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

     -f      The filesystem is forcibly unmounted. Active special devices con-
             tinue 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 unmount-
             ed. This option implies the -a option and, unless otherwise
             specified with the -t option, will only unmount NFS filesystems.

     -t ufs | lfs | external 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 ac-
             tion should not be taken. For example, the umount command:

                   # umount -a -t nfs,mfs

             umounts all filesystems of the type NFS and MFS.

     -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 3 AT&T UNIX.

MirBSD #10-current            February 20, 1994                              1

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