changing multiple extensionless files to .dat

February 8, 2011 at 10:15:22
Specs: Windows XP Home
I have around 500 files with no file extensions that i need to change to .dat files. I've tried through the dos rename command which allows me to change the file extension for files which already have an extension however when i renamed my extensionless files ie. putting filename.dat the renamed files still had no extension. I would be really greatful for any ideas.

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February 8, 2011 at 10:22:04
... I just tried ren filename filename.dat worked for me!
... place them all into the same folder (this folder is called 123) ie C:\123

... @ command prompt type ren C:\123\*.* *.dat [press enter]

......................... (make sure of the spaces)

Angel Decoy
... Posting is provided "AS IS" with no warranties

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February 8, 2011 at 10:35:50
Make sure you have unchecked system and hidden files as well as hide file extensions in explorer tools/options/view

I suspect the files have extensions but you are not seeing them.

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February 8, 2011 at 10:42:09
I agree with wanderer that the option to hide file extensions for common file types is probably checked.

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