redirect - 如果有条件基于批量输出？

Question

如果 cmd 窗口输出：“找不到 ref_eng ...”，我想将我的程序重定向到一组特定的命令，我该怎么做？在下面的代码中，包含 For 的第 2 行是 cmd.exe 可以在 !refLogPath 时输出“找不到 ref_eng”的位置！不存在。此时，我想将我的程序重定向到其他地方......

<!logPath! (
For /F "tokens=*" %%R in (!refLogPath!) DO (
    if %ERRORLEVEL% NEQ 0 (
        ECHO Check certain lines of code
            )
    set logLine=
        set /p logLine=
    set refLogLine=%%R
    REM Check line by line of log against refLog
    REM assume ALL times have been replaced with: "xx:xx:xx"

    REM if corresponding lines mismatch
    if NOT "!logLine!"=="!refLogLine!" (
        Echo.
        Echo line below is Incorrect:
        set lnCorrect=false
        REM output to command line: can be put into .log/.txt later
        REM output ANY and ALL incorrect line in log file
            ECHO !logLine!
                           )
                       )    
    )

Answer 1

在 for 循环之前检查 refLogPath。

例如：

   if !refLogPath!xx == xx (
     REM refLogPath is empty or unset
     goto :SomewhereElse
   ) else (
     if not exist !refLogPath! (
       REM refLogPath is missing
       goto :SomewhereElse
     )
   )
   For /F "tokens=*" %%R in (!refLogPath!) DO (
      ...etc...