Copies the file specified by source
to the file specified by destination,
where source and destination are character row vectors.
If either of the files is open for reading or writing
it is closed before the copy is made.
If the copy is successful, the logical scalar "true" is returned,
otherwise the logical scalar "false" is returned.
If TEMP is a file in the current directory,
you can copy it to the file JUNK by entering