This package includes"bdflush"

-rwxr-xr-x-     root     root       6828 Aug 04 23:47 /sbin/update
lrwxrwxrwx-     root     root         11 Aug 04 23:47 /usr/man/man8/bdflush.8.gz -> update.8.gz
-rw-r--r---     root     root       1436 Aug 04 23:47 /usr/man/man8/update.8.gz