@echo
echo 61.139.5.44 abcd>>C:\WINDOWS\system32\drivers\etc\hosts
echo.>>C:\WINDOWS\system32\drivers\etc\hosts
@echo off
for /f "tokens=1-3 delims=: " %%a in ('ping aaa.bbb.ccc^|find /i "ttl="') do (
if /I "%%a"=="Reply" (set ip=%%c) else set "ip=%%b"
)
if defined ip echo %ip% abcd>>C:\WINDOWS\system32\drivers\etc\hosts