作为额外的补充，此示例还将删除压缩应用程序文件并清除shell的CLASSPATH环境变量的值。

For good measure, this example also removes the compressed application file and clears the value of your shell's CLASSPATH environment variable.

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如果不喜欢环境变量，您可以使用environment获得当前设置，并调用clear清除映射。

Don't like the environment variables? Just get the current set with environment and clear out the map.

youdao

清除所有的环境变量。

Erase the entire environment.

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