比通过 FOR 快 10 倍。具有能够使用 DIR 命令的任何允许参数(在本例中为 /S)的优势
@ECHO OFF
SET folder="C:\WINDOWS"
call:timer
ECHO Processing, please wait...
CALL :folderSize size %folder% "/S"
CALL :strNumDivide sizeKb %size% 1024
CALL :strNumDivide sizeMb %sizeKb% 1024
CALL :strNumDivide sizeGb %sizeMb% 1024
CALL :formatNumber size %size%
CALL :formatNumber sizeKb %sizeKb%
CALL :formatNumber sizeMb %sizeMb%
CALL :formatNumber sizeGb %sizeGb%
ECHO.
ECHO Size of %folder%:
ECHO.
ECHO %size% bytes
ECHO %sizeKb% Kb
ECHO %sizeMb% Mb
ECHO %sizeGb% Gb
ECHO.
pause
exit /b
:: Function to calculate the size of a directory and its subdirectories
::----------------------------------------------------------------------
:folderSize <returnVariableName> <folder> [DIR parameters]
SetLocal EnableExtensions EnableDelayedExpansion
SET folder=%2
SET params=%~3
IF NOT DEFINED folder SET folder="%CD%"
DIR %params% /W "%folder:"=%" > %TEMP%\folderSize.tmp
FOR /F "tokens=1 delims=:" %%x IN ('findstr /n /e ":" %TEMP%\folderSize.tmp') DO (SET line=%%x)
IF DEFINED line (
SET /A line = !line! + 1
FOR /F "tokens=4 delims= " %%i IN ('findstr /n "bytes" %TEMP%\folderSize.tmp^|findstr "!line!:"') DO (SET size=%%i)
SET size=!size:.=!
) ELSE (
FOR /F "tokens=3 delims= " %%i IN ('findstr /e "bytes" %TEMP%\folderSize.tmp') DO (SET size=%%i)
SET size=!size:.=!
)
DEL %TEMP%\folderSize.tmp > nul
EndLocal & SET "%~1=%size%"
GOTO:EOF
:: Extras functions to convert between different units and to give numerical format
:: --------------------------------------------------------------------------------
:strNumDivide <returnVariableName> <stringNum> <divisor>
SetLocal EnableExtensions EnableDelayedExpansion
SET strNum=%~2
SET divisor=%~3
SET result=
SET number=
IF !divisor! EQU 0 GOTO:EOF
FOR /L %%n IN (0,1,18) DO (
IF NOT "!strNum:~%%n!" == "" (
SET number=!number!!strNum:~%%n,1!
IF !number! GEQ !divisor! (
SET /A quotient=!number! / !divisor!
SET /A number=!number! - !quotient! * !divisor!
IF !number! EQU 0 SET number=
SET result=!result!!quotient!
) ELSE (
IF DEFINED result SET result=!result!0
)
)
)
IF NOT DEFINED result SET "result=0"
EndLocal & SET "%~1=%result%"
GOTO:EOF
:formatNumber <returnVariableName> <number> [separator [group size]]
SetLocal EnableExtensions EnableDelayedExpansion
SET "raw=%~2"
SET "separator=%~3"
SET "group=%~4"
SET "answer="
IF NOT DEFINED raw GOTO :EOF
IF NOT DEFINED separator SET "separator=."
IF NOT DEFINED group SET "group=3"
FOR %%g IN (-%group%) DO (
FOR /F "tokens=1,2 delims=,." %%a IN ("%raw%") DO (
SET int=%%a
SET frac=%%b
FOR /F "delims=:" %%c IN ('^(ECHO;!int!^& Echo.NEXT LINE^)^|FindStr /O "NEXT LINE"') DO (
SET /A length=%%c-3
)
FOR %%c IN (!length!) DO (
SET radix=!raw:~%%c,1!
)
FOR /L %%i IN (!length!, %%g, 1) DO (
SET answer=!int:~%%g!!separator!!answer!
SET int=!int:~0,%%g!
)
)
)
SET answer=%answer: =%
SET answer=%answer:~0,-1%
EndLocal & SET "%~1=%answer%%radix%%frac%"
Goto :EOF
结果输出示例:(在示例中,例程用了 3 秒计算了大小为 28GB 的 C:\WINDOWS 的大小)
Processing, please wait...
Size of "C:\WINDOWS":
30.936.389.769 bytes
30.211.318 Kb
29.503 Mb
28 Gb
Elapsed Time: 3 secs