请在原始问题下方查看不同方法的一些测试比较:

到目前为止，我尝试了两种方法:

1.使用 Get Folder Size from Windows Command Line 中的代码遍历目录:

@echo off
set size=0
for /r %%x in (folder\*) do set /a size+=%%~zx
echo %size% Bytes

2.保存a的输出

'dir %folder% /s /a'  

写入一个文本文件，然后读入底部的尺寸

3.我现在尝试的最后一种方法是使用 du(来自 MS 的磁盘实用工具 - https://technet.microsoft.com/en-us/sysinternals/bb896651.aspx)。

现在除了#3 之外，这两种方式对于我需要的东西(成千上万个文件)来说似乎都太慢了。所以问题是其中哪一个是最快的/应该是最快的，以及是否有任何其他快速(更)的方法来获取具有 100k+ 个文件(并且有 100 个文件夹)的文件夹内容的大小

开始编辑:

下面是我进行比较的非常老套的方式(屠杀我的程序以查看一些输出)
有些部分存在一些小错误，例如选项 3 会失败，因为它试图处理大于 32 位限制的数字，而且我确信还有更多问题，但我认为一般时间安排很明显，除非我真的搞砸了按照我的逻辑。

选项 I:遍历目录，使用 VB 脚本读取“dir”的文本输出并查找末尾的大小 + 将其转换为 MB(最初是从其他地方获得的，但我实际上丢失了位置我从中得到的) 选项 II:迭代，使用 findstr 管道并直接输出结果(不转换为 MB)——来自@MC ND 选项 III:使用 compact 命令进行迭代——来自@npocmaka 选项 IV:来自 @user1016274 - 使用 robocoby

(还有一些答案，但这些是我能够合并的)

这些是我得到的结果，它们之间的相关性非常一致，robocopy 把它们吹走了

选项 I 和选项 II 通常很接近，选项 II 稍微好一点(两者都在 1 分 10 秒到 2 分 10 秒之间，不确定差异从何而来) 第三部分 - 16-17 分钟 第四部分 - 10-20 秒

@echo OFF
setlocal enabledelayedexpansion

REM OPTION I - directory iteration
REM OPTION II - iteration with findstr pipe
REM OPTION III - compact

:MAIN
REM Initialize log filename
for /f "delims=" %%a in ('echo %date:~10,4%%date:~4,2%%date:~7,2%%time:~0,2%%time:~3,2%%time:~6,2%') do @set LOGFILEPOSTFIX=%%a
set LOGFILEPOSTFIX=%date:~10,4%%date:~4,2%%date:~7,2%%time:~0,2%%time:~3,2%%time:~6,2%
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% 
set "LOGFILE=Proj_not_in_db_%LOGFILEPOSTFIX%.log"


set option=1
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART I ---- Directory Listing into file, iterate through the sizes of all files inside folder >> %LOGFILE%
echo %TIMESTAMP% - PART I
call :PROCESSFOLDER
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART I ---- END >> %LOGFILE%
echo %TIMESTAMP% - PART I - END
set option=2
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART II  findstr pipe ---- >> %LOGFILE%
echo %TIMESTAMP% - PART II
call :PROCESSFOLDER
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART II ---- END>> %LOGFILE%
echo %TIMESTAMP% - PART II - END
set option=3
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART III compact ---- >> %LOGFILE%
echo %TIMESTAMP% - PART III
call :PROCESSFOLDER
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART III ---- END>> %LOGFILE%
echo %TIMESTAMP% - PART III - END
set option=4
set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
echo %TIMESTAMP% - PART IV robocopy ---- >> %LOGFILE%
echo %TIMESTAMP% - PART IV
call :PROCESSFOLDER

call :CLEANUP
echo FINAL
pause
goto :EOF

:PROCESSFOLDER

    echo C:\Windows
    echo Processing C:\Windows >>  %LOGFILE%
    break > projects_in_folder.tmp
    for /f "tokens=1-4,* SKIP=7" %%b IN ('dir "C:\Windows" /Q /TW /AD') do (
        set _folder=%%f
        REM Don't write the 2 lines at the end displaying summary information
        if NOT "%%e" EQU "bytes" (
            SET _folder=!_folder:~23!
            echo !_folder!,%%b>> projects_in_folder.tmp
        )   
    )
    set "folder_path=C:\Windows"
    call :COMPARE
goto :EOF

:COMPARE
set file_name=%folder_path:\=_%
break > "%file_name%.txt"
if %option%==4 (
    set "full_path=C:\Windows"
    call :GETFOLDERINFO4
    set TIMESTAMP=%date:~10,4%_%date:~4,2%_%date:~7,2%_%time:~0,2%_%time:~3,2%_%time:~6,2%
    echo %TIMESTAMP% - PART IV ---- END>> %LOGFILE%
    echo %TIMESTAMP% - PART IV - END
)


for /f "tokens=1,2* delims=," %%a in (projects_in_folder.tmp) do (
    for /f "tokens=1,* delims=_" %%x in ("%%a") do (
        set "projcode=%%x"
    )
    set full_path=%folder_path%\%%a
    if %option%==1 call :GETFOLDERINFO 
    if %option%==2 call :GETFOLDERINFO2
    if %option%==3 call :GETFOLDERINFO3

    echo PROJ: %%a SIZE: !totalsize! LASTMODIFIED: %%b >> %LOGFILE%
)
goto :EOF

:GETFOLDERINFO2
set "size=0"
set target=!full_path!
for /f "tokens=3,5" %%a in ('
    dir /a /s /w /-c "%target%"
    ^| findstr /b /l /c:"  "
    ') do if "%%b"=="" set "size=%%a"
echo %size%
set totalsize=%size%
goto :EOF

:GETFOLDERINFO4
pushd "%full_path%" || goto :EOF
setlocal

for /f "tokens=1-10,* delims= " %%a in ('
    robocopy %full_path% %TEMP% /S /L /BYTES /XJ /NFL /NDL /NJH ^| find "Bytes"
') do echo %full_path%: %%c
popd    
goto :EOF

:GETFOLDERINFO
set totalsize=0
dir "%full_path%" /s /a > size.txt 
REM Run VBScript that outputs size in MB which is saved
pushd %~dp0
start /b "" cscript /nologo foldersize.vbs
FOR /F "usebackq tokens=*" %%r in (`CSCRIPT "foldersize.vbs"`) DO SET totalsize=%%r
echo bla > nul
goto :EOF

:GETFOLDERINFO3
set "last=#"
set "_size="
for /f "tokens=1 delims= " %%s in ('compact /s:"%full_path%" /q ') do (
        set "_size=!last!"
        set "last=%%s"
)
set "_size=%_size:  =%"
set "_size=%_size: =%"
set "_size=%_size:.=%"
set "_size=%_size:,=%"
set "_size=%_size:      =%"
echo folder size is : %_size% bytes
set totalsize=%_size%
goto :EOF


:CLEANUP

DEL /Q /S projects_in_folder.tmp
DEL /Q /S size.txt
goto :EOF

最佳答案

经过一些测试和性能比较

目录/s
紧凑型/s
和 powershell GetChild-Item

我发现使用robocopy要快得多。另一个优点是，即使是很长的路径也不会导致错误(路径中超过 256 个字符)，例如在深度嵌套的文件夹中。
如果您不想计算结点后面的数据，可以像这样轻松地包含在 robocopy 中:

@echo off
pushd "%~1" || goto :EOF

for /f "tokens=2 delims= " %%a in ('
    robocopy "%CD%" "%TEMP%" /S /L /BYTES /XJ /NFL /NDL /NJH /R:0 ^| find "Bytes"
') do echo %CD%: %%a
popd

如果您省略 /BYTES 选项，您将获得以 MB 或 GB 格式设置的大小值。在这种情况下，还必须使用另一个循环变量打印维度(k、m、g、t 表示千、兆、千兆、万亿):

@echo off
setlocal ENABLEDELAYEDEXPANSION

pushd "%~1" || goto :EOF
set "folder=%CD%"
if NOT "%folder: =%"=="%folder%" set folder="%folder%"

for /f "tokens=2-3 delims= " %%a in (
    'robocopy %folder% %folder% /S /L /XJ /NFL /NDL /NJH /R:0 ^| findstr /I "Bytes"'
) do ( 
    set dim=%%b
    set "dim=!dim:k=KB!" & set "dim=!dim:m=MB!" & set "dim=!dim:g=GB!" & set "dim=!dim:t=TB!"    
    if !dim! EQU %%b set dim=B
    echo ^    %CD%: %%a !dim!
)
popd

此处的 robocopy 命令实际上并不复制任何内容(由于“/L”列表选项)，而是打印包含文件大小总和的摘要行，然后对其进行解析。由于 robocopy 仍需要源文件夹和目标文件夹的有效路径，因此文件夹名称被使用了两次。

文件夹名称可能包含也可能不包含空格，因此最终需要用引号引起来。这是在第一行处理的。 %%b 包含维度字母或数值。这是通过替换来测试的，以避免 set/A 的 32 位限制。

关于windows - 使用批处理脚本快速获取文件夹大小的方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30513287/