Using RENAME (REN)
The RENAME command (can be abbreviated REN) can be used to rename one or more files through the use of the ? and * wildcards. RENAME uses the same syntax with any version of Windows:
J:\>rename /? Renames a file or files. RENAME [drive:][path]filename1 filename2. REN [drive:][path]filename1 filename2. Note that you cannot specify a new drive or path for your destination file.
For example, RENAME MYDOC.DOC MYNOVEL.DOC changes MYDOC.DOC to MYNOVEL.DOC. RENAME *.BAK *.OLD changes all *.BAK files in the current folder to *.OLD.
 | Windows 9x/Me cannot use DEL/ERASE to delete system, hidden, or read-only files. However, Windows NT/2000/XP ... |
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