This utility has been superseded by bcopy, a much better program that accomplishes the same task.
Replaces a file even if you aren't allowed to. The new file will be set to have the privileges and owner of the old file. This is roughly equivalent to "ICACLS /save", TAKEOWN, "ICACLS /grant F", COPY, "ICACLS /setowner", "ICACLS /restore". You must have administrator privileges to replace protected files and you may need to elevate.