![]() ![]() ![]() ::Note that exclamation marks must not occur within the given string. ::This function splits off the last `_`-separated item of a string. To rename all file extensions in a folder or sub-folder at once in Windows 11/10, follow these steps: Open Notepad on your computer. :GET_LAST_ITEM rtn_last rtn_without_last val_string Rem // Enable delayed expansion to be able to read the variables: Rem // Call sub-routine that removes the last `_`-separated part: Rem // Store current file name and extension: Setlocal EnableExtensions DisableDelayedExpansionįor /F "delims= eol=|" %%F in ('dir /B /A:-D "%_SOURCE%\%_MASK%"') do ( Note that this fails in case any of the files contains exclamation marks ! in their names. Here is a modified script that I posted in another answer, relying on a nice hack to remove the last portion of a string separated by a certain character – the underscore _ in this case. The last string assigned to %%b will be _laststring.ext, so the value assigned to newname will fit the processing requirement, so rename the file. Use a simple for to assign newname to the original filename with the _string removed (replaced by nothing) and add back the extension using %%~xa. WIth each name found, using delayed expansion, assign the name to filename and then replace each _ with Space_ Step 3:Hover over the extension to highlight it, then input another extension and press Enter to confirm. Perform a directory scan of all filenames matching the mask. Part 1: Changing a file’s extension in Windows 10 Step 2: Select the file for which you wish to alter the file extension, then press F2 to adjust the filename and extension. After you've verified that the commands are correct, change ECHO(REN to REN to actually rename the files. While you type in the search and replace input fields, the preview area will show what the items will be renamed to. SmartRename allows simple search and replace or more advanced regular expression matching. The required REN commands are merely ECHOed for testing purposes. SmartRename is a Windows Shell Extension for advanced bulk renaming using search and replace or regular expressions. You would need to change the setting of sourcedir to suit your circumstances. FOR %%b IN (!partsname!) DO SET "newname=!filename:%%b=!%%~xa"
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