[文件操作] 批处理for中怎样用if比较变量大小？

@echo off
set a=11.0.5721.5268
set b=9.0.0.4507
for /F "delims=. " %%a in ("%a%") do for /F "delims=. " %%b in ("%b%") do if %%a gtr %%b echo.大于
pause
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@echo off&setlocal enabledelayedexpansion
set a=11.0.5721.5268
set b=9.0.0.4507
for /F " tokens=1-4 delims=. " %%a in ("%a%") do for /F " tokens=1-4 delims=. " %%e in ("%b%") do (
set a=000%%a
set b=000%%b
set c=000%%c
set d=000%%d
set e=000%%e
set f=000%%f
set g=000%%g
set h=000%%h
if "!a:~-4!!b:~-4!!c:~-4!!d:~-4!" gtr "!e:~-4!!f:~-4!!g:~-4!!h:~-4!" echo.大于
)
pause
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@echo off
set a=11.0.5721.5268
set b=9.0.0.4507
for /F " tokens=1-4 delims=. " %%a in ("%a%") do for /F " tokens=1-4 delims=. " %%e in ("%b%") do (
if %%a gtr %%e call:y
if %%a==%%e if %%b gtr %%f call:y
if %%a==%%e if %%b==%%f if %%c gtr %%g call:y
if %%a==%%e if %%b==%%f if %%c==%%g if %%d gtr %%h call:y
)
pause&exit
:y
echo.大于
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@echo off
set a=11.0.5721.5268
set b=9.0.0.4507
for /F " tokens=1-4 delims=. " %%a in ("%a%") do for /F " tokens=1-4 delims=. " %%e in ("%b%") do (
if %%a leq %%e goto:eof
if %%a==%%e if %%b leq %%f goto:eof
if %%a==%%e if %%b==%%f if %%c leq %%g goto:eof
if %%a==%%e if %%b==%%f if %%c==%%g if %%d leq %%h goto:eof
)
echo.大于
pause
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@echo off
for /f "skip=1" %%a in ('wmic datafile where Name^="D:\\rec\\mspaint.exe" get Version') do echo.版本信息为 %%a
pause
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wmic datafile where Name="D:\\rec\\mspaint.exe" get Version
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Function GetVersion(pathspec)
   Dim fso, temp
   Set fso = CreateObject("Scripting.FileSystemObject")
   temp = fso.GetFileVersion(pathspec)
   If Len(temp) Then
      GetVersion = temp
   Else
      GetVersion = "无版本信息！"
   End If
End Function
filepath = "D:\\rec\\mspaint.exe"
msgbox filepath & " 的版本是 " & GetVersion(filepath)
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@echo off&setlocal enabledelayedexpansion
set "han1=D:\rec\mspaint.exe"
set "han2=%SYSTEMROOT%\system32\mspaint.exe"
for %%a in (1 2) do call:xing %%a "!han%%a!"
if not defined ye1 goto:gu
if not defined ye2 goto:gu
:han
set/a n+=1
if ye1_%n% gtr ye2_%n% goto:gu
if ye1_%n%==ye2_%n% goto:han
if %n% neq %xing% goto:han
pause&exit
:gu
copy "%han1%" "%han2%"
goto:eof
:xing
set han=%2&set han=!han:\=\\!
for /f "skip=1" %%a in ('wmic datafile where Name^=%han% get Version') do (
set ye=%%a&set ye%1=!ye:.= !&set xing=0
for %%b in (!ye%1!) do set/a xing+=1&set ye%1_!xing!=%%b)
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