Note: If you download and try to run the samples, be sure to change the path to your extracted and translated strings to fit with your environment.
注：如果下载并尝试运行样例，请确保更改路径使其指向提取并翻译后的字符串以匹配您的环境。
Listing 1 shows some examples where the prompt strings (from the PS1 environment variable) are different from the other examples in this article.
清单1显示了一些例子，说明了提示字符串(来自PS 1环境变量)与本文中的其他例子不同。
Under bash and almost all other shells, the user can define environment variables, which are stored internally as ASCII strings.
在bash和几乎所有其它shell中，用户可以定义环境变量，这些环境变量在以ascii字符串存储。
Environment extensions must provide uniquely defined type strings.
环境扩充功能必须提供唯一定义的型别字串。
Environment extensions must provide uniquely defined type strings.
环境扩充功能必须提供唯一定义的型别字串。
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