用perl实现抓包并获取报文 运行在LINUX系统下,可实现7*24小时运行 自动以日期为文件名,把报文存贮到硬盘 文件保存为TXT格式-Using perl and get messages to achieve Ethereal running on LINUX system, can be realized 7* 24 hours to run automatically date the file name, the messages stored to the hard d