bat修改hosts文件

attrib -R C:WINDOWSsystem32driversetchosts 
@echo  
@echo 127.0.0.1 aaaa.bbb.com >>C:WINDOWSsystem32driversetchosts
@echo
@echo 127.0.0.1 cccc.ddd.com >>C:WINDOWSsystem32driversetchosts
ipconfig /flushdns