601997526

为什么一定用findstr命令呢

@echo off
:ip
cls
set/p ip=请输入IP(如:192.168.1.1)
echo %ip%|findstr "^[0-9]*.[0-9]*.[0-9]*.[0-9]*$"||(echo 输入行太长&pause>nul&goto :ip)
for /f "tokens=1,2,3,4 delims=." %%i in ("%ip%") do (
if %%i gtr 255 (echo 输入行太长&pause>nul&goto :ip)
if %%j gtr 255 (echo 输入行太长&pause>nul&goto :ip)
if %%k gtr 255 (echo 输入行太长&pause>nul&goto :ip)
if %%l geq 255 (echo 输入行太长&pause>nul&goto :ip)
)
pause
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