How to add file extension to the files which do not have an extension in a specific folder using Windows command prompt?

I have folder (say c:\folder) in which many files reside. All of them are HTML documents. But some of them have not .html extension. I want to add them .html file extension using command prompt at once.

All the files which have not extension end with ^ character. All the file names have different lengths.

I have tried

ren *^ *^.html

but it did not rename all the files and prompted that

There is already an existing file with same name or file could not be found

3 Answers

^ is an escape character in cmd.exe. You have to escape it. Try ren *^^ *^^.html.

I try this and it works :

 C:\test>ren *. *.html

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Update :with ^ in the name :

13

The following works (you may wish first to add echo before the ren to make sure that the command is doing what you want):

for %f in (*.) do ren "%f" "%f.html"

You need the quotes in case the file name has embedded blanks.

2