Man手册对rmelem的解释
For each symbolic link, rmelem does the following:
Removes the symbolic link and link object from the VOB.
Removes all metadata (attributes and hyperlinks) attached to the symbolic link .
Removes all event records for the symbolic link.
Removes all references to the symbolic link from versions of the VOB's directory elements. (As a result, subsequent listings and comparisons of those directory versions will be historically inaccurate.)
Note: rmelem does not create an event record when you remove a symbolic link.
rmelem deletes only the instance of an element type object that is attached to the element. To delete the element type object or to delete the type object and all its instances, use the rmtype command.
希望今后此类问题不要再问,直接查手册