bat 命令执行结果赋给变量

@echo off & color 0d & setlocal enabledelayedexpansion
  ipconfig>ip.txt
    for /f "delims=" %%a in (ip.txt) do (
      set ip=%%a
      echo !ip!
    )
    pause>nul


@echo off
set strA=
set strB=
set strC=
set strD=
findstr "AAAAA" *.txt >nul 2>&1 && set strA=A
findstr "BBBBB" *.txt >nul 2>&1 && set strB=B
findstr "CCCCC" *.txt >nul 2>&1 && set strC=C
findstr "DDDDD" *.txt >nul 2>&1 && set strD=D
echo 存在：%strA%%strB%%strC%%strD%