【批处理】使用批处理、Bat 比较指定文件大小

使用批处理、Bat 比较指定文件大小：

for %%a in (qq.exe) do if %%~za EQU 88888 echo 文件怎么怎么...

    以上代码含义为，如果文件“QQ.exe”大小不等于88888字节，则显示“文件怎么怎么...”，具体参数，请查看下表。我用相同的颜色表示了参数对应的具体参数列表。

%~I         - expands %I removing any surrounding quotes (")
%~fI        - expands %I to a fully qualified path name
%~dI        - expands %I to a drive letter only
%~pI        - expands %I to a path only
%~nI        - expands %I to a file name only
%~xI        - expands %I to a file extension only
%~sI        - expanded path contains short names only
%~aI        - expands %I to file attributes of file
%~tI        - expands %I to date/time of file
%~zI        - expands %I to size of file
%~$PATH:I   - searches the directories listed in the PATH
               environment variable and expands %I to the
               fully qualified name of the first one found.
               If the environment variable name is not
               defined or the file is not found by the
               search, then this modifier expands to the
               empty string

文件比较操作:
    EQU - 等于
    NEQ - 不等于
    LSS - 小于
    LEQ - 小于或等于
    GTR - 大于
    GEQ - 大于或等于