UNIX操作系统因其安全、可靠和高效特点，在服务器领域得到广泛应用。为了使大家了解UNIX操作系统，以致引导读者最终掌握和管理UNIX操作系统，我们编写了《UNIX简单命令和网络常用命令简介》。-UNIX operating system for its safe, reliable and efficient features, are widely used in servers. To make you understand the UNIX operating system, which