【已解决】批处理if命令判断的问题

wlf2r

批处理

1. for /f "usebackq" %%a in ('D:\a\a.txta') do set size2= %%~za
   
2. if %size1% equ 0 (
   
3. echo. size:0
   
4. )

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1. if %size1% == "" (
   
2. echo. size:0
   
3. )

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因为文件不存在拿不到大小  怎么用if来判断,上面2种都不行

aloha20200628

1. 
   
2. @echo off &for %%a in ("D:\a\a.txta") do if exist "%%~a" (echo,filesize=%%~za) else echo,filesize=0
   

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回复 1# wlf2r

1. @echo off
   
2. set "TestFile=C:\Test\1.txt"
   
3. set "FileSize=0"
   
4. if exist "%TestFile%" (
   
5.     for %%a in ("%TestFile%") do (
   
6.         if not %%~za == 0 (
   
7.             set "FileSize=%%~za"
   
8.         )
   
9.     )
   
10. )
    
11. echo Size:%FileSize%
    
12. pause

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