complete -c umount -s t -l types -d 'Indicate that the actions should only be taken on filesystems of the specified type.' -r
complete -c umount -s a -l all -d 'All of the file systems described in /proc/mounts are unmounted. The proc filesystem is not unmounted.'
complete -c umount -s f -l force -d 'Force an unmount (in case of an unreachable NFS system).'
complete -c umount -s l -l lazy -d 'Lazy unmount. Detach the filesystem from the fs hierarchy now, and cleanup all references to the filesystem as soon as it is not busy anymore.'
complete -c umount -s n -d 'Unmount without writing in /etc/mtab. This is the default action. This flag exists only for historical compatability.'
complete -c umount -s v -l verbose -d 'output a diagnostic for every file processed'
complete -c umount -s h -l help -d 'Print help (see more with \'--help\')'
complete -c umount -s V -l version -d 'Print version'