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DOS and Batch Files

Rename All Files From One Extension to Another

SUMMARY: Quickly change the extension of all files in a directory.

(Note that this may not work on early versions of DOS, so experiment.)

If you ever need to rename all files in a directory from one extension to another, for example, *.new to *.old, you can use wildcards with the rename command. In this example, the command would be:

rename *.new *.old

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The MalekTips website was created in 1998 by Andrew Malek of Envision Programming. The page's goal is to freely disperse computer-related tips, hints, and informative articles. Tips are organized to be easy to find, and are presented clearly, in easy-to-understand language. MalekTips also provides information and links to public-domain, open source, freeware, shareware, and commercial software available for download. < more >