![]() ![]() If the command line sounds daunting, then there are a couple of useful file renaming utilities that will get the job done for you with only a few clicks. You can get more information on how to use the ren command from Microsoft’s website. If you have a folder with a bunch of JPGs inside and you want to change the file extension to PNG, for example, you would type in the following command:Īs you can see above, the command changed all the files in that directory with a JPG file extension to ones with a PNG file extension. Both of them do the exact same thing, so it’s just a preference as to which one you use. There are two commands that you can use at the command prompt: ren and rename. Command Lineįor those of you who are familiar with the command line, there is a very easy command you can use to perform very simple file renaming tasks. Luckily, there are a couple of different ways we can change the file extension for multiple files at once. JPG, it’s going to take forever to do this using the method above. ![]() So how do you rename multiple file extensions at once? If you have a directory full of files that need to be changed from. In my case, the text file was from Excel, so I added that extension back. Obviously, the file has to have originally been from that program that you are changing the file extension too. XXX or whatever the type is for the file you want it to be, i.e.TXT for text files. Now right-click on your file and choose Rename. If the file has no extension at all, this step may not be necessary, but I am including it because if you’re trying to CHANGE the file type from one type to another, then you need to do this. Go to the View tab and scroll down till you see the option “ Hide extensions for known file types“. In Windows 8, you just click on the View tab in Explorer and check the File name extensions box. In Windows 7, click on the Organize button and then click Folder and search options. You can do this by going to My Computer and then going to Tools and Folder Options. If you want to change the file extension for the file, you first need to be able to see file extensions in Windows. ![]() Make sure folder2 does not exist, neither in d:\path nor in the current folder, or the previous command will really move folder2 into folder1 (making folder2 a subfolder of folder1).Obviously, since there is no file extension for the file, Windows is not able to determine which program should open it. Where folder2 is a folder name only (not a fully qualified path). You can rename folders with the MOVE command: MOVE d:\path\folder1 folder2 Will rename testfile.txt to testfile.txta. Will rename testfile.txt to tesa, so it seems to mean chop off everything after the last s and then append an a. REN testfile.txt *stĭoes that mean chop off everything after the last occurrence of st? No it doesn't: REN testfile.txt *sa Will not change the name at all (remember: the last occurrence.?). Justin taught me an undocumented REN feature to chop off everything from a file name after the last occurrence of a specified character: REN testfile.txt *s The proper way to do this in NT is: FOR %%A IN (*.txt) DO REN "%%~fA" "%%~nA1.*"įor each *.txt file, "%%~fA" resolves to the (doublequoted) fully qualified path, and %%~nA1 to the original file name only, with a 1 appended, and. Try that in Windows (XP) and you'll get *.txt1.txt files. If I remember correctly, in the old MS-DOS days, it was possible to append characters to the file name using the command: REN *.txt *1.txt You can even use wildcards in filename1 (and filename2) to rename, say, all your (very) old MS-DOS (ASCII) help files from *.doc to *.txt: REN *.doc *.txt Note that you cannot specify a new drive or path for your destination file. VoltCraft Energy Logger 3500 ConfigurationĮver since the earliest DOS versions the RENAME and its "twin" (or alias?) REN have been around to allow us to change file names: REN or RENAME. ![]()
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