The ENV is a unique string that identifies the server.

ENV 是唯一标识服务器的字符串。

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Notice also that Listing 5 adds a new variable to the query string, env.

还要注意，清单5将一个新的变量添加到查询字符串env。

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It launches a special program, env, that in turn launches the first instance of squirrelsh found in your PATH variable.

它启动了一个特殊的程序env，此程序又启动PATH变量中找到的第一个squirrelsh实例。

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