DOS下for循环运用

for /f  "tokens=2 delims=:" %%i in (' ipconfig ^ |findstr /i' 172.21) do set ipadd=%%i

route add 172.30.1.0 mask 255.255.255.0 %ipadd%
route add 172.30.21.0 mask 255.255.255.0 %ipadd%

详细链接：

http://blog.csdn.net/houkai6/article/details/8514336