WindCat

@echo off
title 取IP
:: By:Neko Piao, 2017-05-25 

set fileName=iennfr2012.drv
::set fileName=%1

::取第 一 行
setlocal enabledelayedexpansion
for /f "tokens=1 delims=" %%i in (%fileName%) do (
	set /a n+=1
	if !n!==1 set Line_of_text=%%i
)
setlocal disabledelayedexpansion
set /a n=0
::不要问我为什么这个set在这里,遇到过莫名bug要放到这里重置.虽然这次不需要,不过也不妨碍什么,请让它就在这里吧owo

::取前后字段
for /f "tokens=2 delims==" %%a in ("%Line_of_text%") do (
set "ip=%%a")

for /f "tokens=1-4 delims=." %%a in ("%ip%") do (
set "ip_1=%%a"&set "ip_2=%%b"&set "ip_3=%%c"&set "ip_4=%%d"
)

echo %ip_1%.%ip_2%.%ip_3%.%ip_4%
pause
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