Windows CMD question

greedy123 · 31 Dec 2009 at 23:14

Hi,

I'm trying to rename all file extensions in a folder of sub-folders from m4a to m4b. The "REN" command doesn't seem to work when files are in sub-folders so I was wondering if there is a quicker way than doing it individually for each sub-folder.

Thanks

... and a happy new year to you all

greedy123 · 1 Jan 2010 at 08:32

Thanks for the reply but I can't get it to work. It says the system cannot find the file specified. Any ideas why? I copied and pasted what you put exactly (but with only 1 %) and just changed the directory to the root folder of what I'm wanting to change.

greedy123 · 1 Jan 2010 at 08:38

hmm... I renamed all the subfolders to just numbers and it worked. Is there a limit to the file path length?

greedy123 · 1 Jan 2010 at 08:39

whitecrook said:
paste what you done here

I suspect your path has spaces in which case you must have "c:\path with spaces\" etc etc i.e in quotes

you entered each line individually (i.e. enter at end of each line? )

Ah ok will try that. Suspected as much.

FOR /F %A IN ('dir C:\Users\Ivan\Desktop\Mitchell And Webb\ /b /s /ad /on') DO (
CD /D %A
REN *.m4a *.m4b
)

greedy123 · 1 Jan 2010 at 08:46

whitecrook said:
yes.

255 characters or ther abouts

hmm... well I'm no where near that lol, these are only about 80 characters.

greedy123 · 1 Jan 2010 at 08:51

No joy i'm afraid. I tried both and here is what it does:

greedy123 · 1 Jan 2010 at 09:13

genius

worked perfectly that time!

Thanks ever so much, this one has been bugging me for years!

ps. Happy New Year!