To run the examples in this tutorial, you need access to a computer running a UNIX operating system with the following software installed on it (see the Resources section of this tutorial for links).
要运行本教程中的示例，您需要访问运行unix操作系统并安装了下面这些软件的计算机(请参见本教程的参考资料部分以获取相关链接)。
She added that the necessary resources must be provided for the defense of the American computer system.
她补充道，必须为防御美国计算机系统的负责人提供必需资源。
System software includes operating systems, compilers, utilities for managing computer resources, and any other program that supports application software.
系统软件包括操作系统，编译器，管理计算机资源的公用程序和其他一些支持应用软件的程序组成。
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