@echo off setloc有这句 for /F %%a in (c:\1.txt) do ( ping -n 2 192.168.1.%%a if errorlevel 1 echo 192.168.1.%%a false>>c:\2.txt else ( echo 192.168.1.%%a true>>c:\2.txt ) ) 怎么还有字数限制。。简单来说判断一直为0是怎么回事