我正在尝试编写批处理脚本，它将首先返回多个文件夹位置的总和，如果这些位置大于50GB，则删除内容。
我在Google上搜索，仍然不知道如何返回文件夹的大小（以GB为单位）。
任何人都可以帮忙吗？
文件夹的大小可以通过dir /S派生（请参阅输出底部的摘要，其中包含所有子项占用的总字节数）。这可以像这样提取：
set "PREVB="
for /F "skip=2 tokens=3" %%B in ('
dir /S /-C "\path\to\folder"
') do (
call set "BYTES=%%PREVB%%"
set "PREVB=%%B"
)
但要小心：不要将此数字视为整数（通过set /A或if EQU / GTR / ...），因为cmd仅支持带符号的32位整数，这很容易超出文件夹大小。
要检查50 GB，您可以拆分结果数字，例如：
rem // Split huge number into GB and ones:
set "BYTES_GIGA=%BYTES:~,-9%"
set "BYTES_ONES=%BYTES:~-9%"
rem // Ensure GB part to be non-empty:
if not defined BYTES_GIGA set "BYTES_GIGA=0"
rem // Remove leading zeroes from ones:
set /A "BYTES_ONES=1%BYTES_ONES%%%1000000000"
然后，如果您愿意，可以将GB编号向上舍入：
if %BYTES_ONES% GTR 0 set /A "BYTES_GIGA+=1"
最后，检查GB编号是否超出预定义的限制：
if %BYTES_GIGA% GTR 50 (
rem // Do something, perhaps delete the entire folder:
rmdir /S /Q "\path\to\folder"
)
在我看来，dir /s /-c返回最后一个块：
Total Files Listed:
51 File(s) 88492332 bytes
14 Dir(s) 112224022528 bytes free
而你只需解析该值（88492332）。
您能否提供更详细的详细信息，了解您拥有的代码以及无法使用的代码？
GetSize.bat
for /F "delims=:" %%a in ('dir /-c /s ^| findstr /N /C:"Total Files Listed"') do set SKIP=%%a
for /F "tokens=3" %%a in ('dir /-c /s ^| more +%SKIP%') do (set FOLDER_SIZE=%%a & goto :end)
:end
echo Final Folder Size is %FOLDER_SIZE%
使用robocoby输出和擦除
代码重新编写。
@echo off
setlocal
prompt $g$s
rem set size= 150.0 m
rem usage -> see SUB :Fsize
set size= 50.0 g
call :createTMP
set /a _N=0
:Listing
rem list Folder List size and delete
for /D %%F in (
D:\1?
D:\80
D:\2014-*
D:\a
) do (
if exist %%F if /i NOT "%~0"==":Listing" (
set /a _N+=1
call mklink /j "%%empty.link.tmp%%\%%_N%%" "%%~F"
) else call :delall "%%~F"
)
rem --- END SETTINGS ---
if :SUB==only (
:createTMP
set "empty.tmp=%temp%\empty_%time::=%"
set "empty.link.tmp=%temp%\link_%time::=%"
md "%empty.tmp%"
md "%empty.link.tmp%"
exit /b
)
if /i "%~0"==":Listing" (
:deltmp
for /d %%D in (
"%empty.link.tmp%\*"
"%empty.link.tmp%"
"%empty.tmp%"
) do rd "%%~D"
exit /b
)
:Listsize
call :Fsize "%size%" size.max
for /f "skip=2tokens=6*" %%a in ('
robocopy /L /purge /njh "%empty.tmp%" "%empty.link.tmp%" /nfl /ndl ^|find " 0 "
') do call :Fsize "%%b" size.out deci.mal pre
if NOT %size.out% lss %size.max% (
echo Folders: %deci.mal% %pre% ^> %size%
call :Listing
)else echo Folders %deci.mal% %pre% ^< %size% &call :deltmp
exit/b
:Fsize "512.0 k" [VAR1-floating point [VAR2-to display only [VAR3-prefix]]]
rem to use with output of robocopy
rem set with decimal minimum 1/1 max b =1024
rem set with decimal minimum 1/10 max k =.9 rounded + 102.3 bytes (+ 10 %)
rem decimal minimum 1/100 max m =.99 rounded + 10.23 KiB (+ 1 %)
rem decimal minimum 1/1000 max g =.999 rounded + 1.023 MiB (+ 0,1 %)
rem 500.0 b -> 500 bytes
rem 200.5 k -> 200,5 KiB
rem 350.04 m -> 350,04 MiB
rem 1.001 g -> 1,001 GiB
rem VAR1 size.out - Binary prefix and number to floating point
rem VAR2 deci.mal - Reverse the calculation part to display only
rem VAR3 pre.fix - Reverse the calculation to add prefix
set/a p=-1,TC=10000
for %%N in (b k m g t p)Do set /a "p+=1,%%N=p"
for /f "tokens=1-3delims=. " %%A in ("%~1 0 b")Do (
set/a"pre.fix=TC*(%%C+1) + %%A"
set "deci.mal=%%A.%%B"
setlocal enabledelayedexpansion
set "FS=!pre.fix!.%%B"
for /f "tokens=1,2" %%S in ("!FS! !deci.mal!")Do (
endlocal
if NOT "%~2"=="" (set "%~2=%%S")else set "size.out=%%S"
if NOT "%~3"=="" set "%~3=%%T"
)
)
set/ax=pre.fix/TC-1
for %%s in (b k m g t p)Do 2>nul set/a"N/=(%%s-x)"||^
if NOT "%~4"=="" (set "%~4=%%s")else set "pre.fix=%%s"
exit /b
:delall
rem be carfully - this will erase all Data !
rem 1st with option /L only list this Files
rem without /L will erase all Data
:@echo off
setlocal
set "T=%temp%\DF%time::=%"
md "%T%" ||exit /b 1
:Delete
if "%~1" equ "" goto :end
robocopy /L /fp /purge /ns /np /njh /njs "%T%" "%~dp1\" "%~nx1"
shift
goto :Delete
:end
rd "%T%"
exit /b 0