This file is used for testing various file\directory tasks. It creates a huge directory tree with some error folders very quickly.

mkdir_tree.bat

@ECHO OFF
IF EXIST TREE (
	RMDIR /S /Q TREE
	ECHO Tree Removed.
	GOTO :EOF
)

FOR %%A IN (1,2,3) DO (
	ECHO Creating [ %%A ] and it's sub directories...
FOR %%B IN (%%A_1,%%A_2,%%A_3) DO (
FOR %%C IN (%%B_1,%%B_2,%%B_3) DO (
FOR %%D IN (%%C_1,%%C_2) DO (
		call:makeDir ""
		call:makeDir "/%%A"
		call:makeDir "/%%A/%%B"
		call:makeDir "/%%A/%%B/%%C"
		call:makeDir "/%%A/%%B/%%C/%%D"
))))

ECHO Tree Created.
GOTO :EOF

:makeDir
	SET "TTPTH=TREE%~1/error"
	IF NOT EXIST "%TTPTH%" (
		MKDIR "%TTPTH%"
		FOR %%Z IN (error,err_file,err) DO (
			ECHO This is error file [ %%Z.txt ] in [ %TTPTH% ]. > %TTPTH%/%%Z.txt
			ECHO This is error file [ %%Z.log ] in [ %TTPTH% ]. > %TTPTH%/%%Z.log
		)
	)
GOTO :EOF