wget - wget --spider doesn't get file size for some links

Question

I want to get some file size. Some people recommend wget --spider. However, when I run it on some links, like http://autos.cn.yahoo.com/ then it said Length: unspecified [text/html]. Is there way to solve this or I could use another way to get file size without actually downloading it? Thank you!

Answer 1

Content-Lengthこれは、サーバーがヘッダーを送信しないか、不正な形式で送信されているために発生します。--ignore-length次のオプションを使用すると、これを無視できます。

$ wget --ignore-length http://autos.cn.yahoo.com/