Wbumount lists the processes which are using a
certain mount point, thus preventing it from being
removed. This is meant to assist the user who
receives a "umount: device is busy" message when
trying to remove a disk. The list is updated once
every second. When all processes are gone, the
"umount" and "eject" buttons are activated. This
teaches a desktop user how to peform the right
actions to free a mount point in an interactive
way.
