weichenxiehou

for /f %%s in (ip.txt) do ( set ii=%%s
call :aa1
)
goto :eof
:aa1
ping -n 1 %ii% 
IF ERRORLEVEL 1 goto :3
for /f "tokens=2 delims=[]" %%i in ('ping -n 1 %ii%') do  (set ip=%%i&goto :aa)
:aa
echo %ip%>>1.txt
:3
复制代码

call调用完后会返回执行原处下一条语句，所以你执行了两次echo。