Change the folder names from one digit to 2 digit numbers

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I have a folder 'data' full of folders which are named like this:
E:\data\foldername1\
E:\data\foldername2\
E:\data\foldername3\
...
E:\data\foldername100\
E:\data\foldername11\
...
I would like to rename the folders with one digit (foldername1- foldername9) with two digits, like that:
E:\data\foldername01\
E:\data\foldername02\
...
As I have lots of those 'data' folders I would like to automate it. I tried without success so far... Could anyone please help me?
  2 Comments
Azzi Abdelmalek
Azzi Abdelmalek on 26 Apr 2016
If you rename E:\data\foldername1\ to E:\data\foldername10\, then what about the existing E:\data\foldername10\?
Butterflyfish
Butterflyfish on 27 Apr 2016
Sorry I meant foldername01 not 10, will edit the question

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Accepted Answer

Alessandro Masullo
Alessandro Masullo on 26 Apr 2016
You can use dir, sscanf, sprintf and movefile.
Use dir to get the list of the folders.
Use scanf to get the number of the folder:
sscanf('folder39','folder%d')
ans =
39
Use sprintf to write the new folder name
sprintf('foldername%04d',15)
ans =
foldername0015
Use movefile to rename your folder.
  2 Comments
Butterflyfish
Butterflyfish on 27 Apr 2016
Thank you! Just running into a problem here:
NewName = sprintf(thisDirName '%02d', EndNumber)
Just because my folder names are actually all different to one another I cannot use
sprintf('foldername%04d',15)
Any suggestion?
Butterflyfish
Butterflyfish on 27 Apr 2016
Figured smth out:
NewName = sprintf('%s%02d',thisDirName(1:end-1), EndNumber2)
working now! Thanks a lot for the help

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