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代碼如下:

@echo off

::每5分鐘復制以下首頁

for /f %%i in ('dir /b c:\index2.htm') do (

set indexdx=%%~zi

)

if %indexdx% gtr 5120 (

echo y | xcopy c:\index2.htm /d /r /k c:\index.htm

)

其中for /f %%i in ('dir /b c:\index2.htm') do (

set indexdx=%%~zi

)

是bat中獲取index2.htm文件大小的。

然后通過if %indexdx% gtr 5120 (

實現(xiàn)判斷是不是大于5120個字節(jié)

主要就是下面這個代碼了功能更強，也比較簡單

代碼如下:

dim fso

set fso = createobject(scripting.filesystemobject)

set fn2=fso.getfile(c:\index2.htm)

flsize2=fn2.size

fldate2=fn2.datelastmodified

set fn=fso.getfile(c:\index.htm)

flsize1=fn.size

fldate1=fn.datelastmodified

if fso.fileexists(c:\index2.htm) and flsize2>50000 and fldate2>fldate1 then

fso.getfile(c:\index2.htm).copy(c:\index.htm)

if err.number=0 then writehistory 成功&now(),log.txt

end if

sub writehistory(hischars, path)

const forreading = 1, forappending = 8

dim fso, f

set fso = createobject(scripting.filesystemobject)

set f = fso.opentextfile(path, forappending, true)

f.writeline hischars

f.close

end sub