Rename all folders with owner name script - batch-file

Question

Im trying to change the name of folders inside a folder to the name of the folders owner..
Exemple, I have a folder with one hundred other folder's all with the name "My Documents" and all of the with a diferente owner.
I already find a way to find the name with the code:
dir /q
but I have no ideia on how to put it in a variable and use that variable to change the folders name...

Answer 1

The usual way to get a commands output is a for.
#echo off
for /f "skip=2 tokens=4,*" %%a in ('dir /q /ad^|find "<DIR>"') do (
for /f "tokens=2 delims=\" %%i in ("%%a") do (
echo owner=%%i
echo folder=%%b
echo ren "%%b" "%%i"
)
)

Answer 2

Here is a batch script -- let us call it rename-dir-by-owner.bat -- based on the code in my comment:
#echo off
setlocal EnableExtensions DisableDelayedExpansion
for /F "delims=" %%U in ('
dir /Q /A:D "%~1" ^| find "<DIR>" ^| findstr /V /R /C:" \.*\.$"
') do (
set "ITEM=%%U"
setlocal EnableDelayedExpansion
set "ITEM=!ITEM:*<DIR>=!" & set "ITEM=!ITEM:*\=!"
for /F "tokens=1,* delims= " %%O in ("!ITEM!") do (
endlocal
ECHO ren "%~dp1%%P" "%%O"
setlocal
)
endlocal
)
endlocal
exit /B
To use this script, provide the directory containing the ones subject to rename as a command line argument -- like this, for instance, supposing the directory is called parent-folder:
rename-dir-by-owner.bat "parent-folder"
The upper-case ECHO command is there for testing purposes; remove it as soon as you actually want to rename any items.
Explanation
The output of the core dir /Q /A:D command line used in the above script looks similar to this:
Volume in drive D has no label.
Volume Serial Number is XXXX-XXXX
Directory of D:\Data
2016/01/01 00:00 <DIR> NT AUTHORITY\SYSTEM .
2016/01/01 00:00 <DIR> BUILTIN\Administrators ..
2015/07/01 01:00 <JUNCTION> NT AUTHORITY\SYSTEM AppData [C:\Users\aschipfl\AppData\Roaming]
2016/03/21 20:00 <DIR> HOST\aschipfl Documents
2016/05/18 23:00 <DIR> HOST\aschipfl Drawings
2016/04/01 13:00 <DIR> HOST\aschipfl Projects
0 File(s) 0 bytes
6 Dir(s) 2'147'483'648 bytes free
The find command filters out all lines that do not contain <DIR> (which marks directories), findstr removes the dummy directories . (current) and .. (parent). So the following lines remain:
2016/03/21 20:00 <DIR> HOST\aschipfl Documents
2016/05/18 23:00 <DIR> HOST\aschipfl Drawings
2016/04/01 13:00 <DIR> HOST\aschipfl Projects
These lines are captured by the outer for /F loop, each one is stored in variable ITEM. Afterwards everything up to the portion <DIR> is removed, then everything up to the (first) \ is cut off. The remaining content of ITEM is now parsed with another for /F loop, which extracts everything in front of the first white-spaces, so the user name of the owner is retrieved; behind the white-spaces is the directory name. Both string parts are passed over to the ren command finally (once ECHO is away).
With this approach the result does (almost) not depend on the locale and region settings of the system, so a quite general solution is achieved. However, this batch program leads to unexpected results if a user name contains white-spaces, but such is not recommended by Microsoft anyway -- consult this article: Creating User and Group Accounts, section "Rules for Logon Names".