RENAME--Examples

Suppose you want to change the extensions of all the filenames in the       
current directory that have the extension .TXT; for example, suppose you
want to change the .TXT extensions to .DOC extensions. To make this change,
type the following command:

    ren *.txt *.doc

To rename a file named CHAP10 (on drive B) to PART10, type the following
command:

    ren b:chap10 part10

The newly renamed file PART10 remains on drive B.