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wget的遞歸選項（-r選項）偶爾會生成許多文件。例如，wget -r www.cnn.com給出如下：遞歸wget控件下載
--2013-05-05 10:35:54-- http://www.cnn.com/about/
Reusing existing connection to www.cnn.com:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘www.cnn.com/about/index.html’
--2013-05-05 10:35:54-- http://www.cnn.com/help/
Reusing existing connection to www.cnn.com:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘www.cnn.com/help/index.html’
......
怎麼可以這樣控制 - 我們可以指定下載的最大總大小，下載的最大時間等？