NAME
  umount - remove a file system mount

SYNOPSIS
  umount PATH
  umount -a LABEL
  umount -a ADDRESS

DESCRIPTION
  Removes either a single mount point if given the path into a mount, or all mount points for a specified file system if given the label or address of the file system.

EXAMPLES
  umount /mnt/82f
    Unmounts the automatically generated mountpoint at `/mnt/82f`.

  umount -a 82f
    Removes all mounts of the file system for which the address starts with `82f`.