我发现(可能) 一个解决方案

In the process of downloading a few thousand log files from one server to the next I suddenly had the need to do some serious multithreaded downloading in BSD, preferably with Wget as that was the simplest way I could think of handling this. A little looking around led me to this little nugget: wget -r -np -N [url] & wget -r -np -N [url] & wget -r -np -N [url] & wget -r -np -N [url] Just repeat the wget -r -np -N [url] for as many threads as you need... Now given this isn’t pretty and there are surely better ways to do this but if you want something quick and dirty it should do the trick...

注意:选项-N使wget只下载“更新的”文件，这意味着它不会覆盖或重新下载文件，除非它们在服务器上的时间戳发生了变化。

Wget不能在多个连接中下载，相反，您可以尝试使用其他程序，如aria2。

我发现(可能) 一个解决方案

In the process of downloading a few thousand log files from one server to the next I suddenly had the need to do some serious multithreaded downloading in BSD, preferably with Wget as that was the simplest way I could think of handling this. A little looking around led me to this little nugget: wget -r -np -N [url] & wget -r -np -N [url] & wget -r -np -N [url] & wget -r -np -N [url] Just repeat the wget -r -np -N [url] for as many threads as you need... Now given this isn’t pretty and there are surely better ways to do this but if you want something quick and dirty it should do the trick...

注意:选项-N使wget只下载“更新的”文件，这意味着它不会覆盖或重新下载文件，除非它们在服务器上的时间戳发生了变化。

正如其他海报所提到的，我建议你看一看aria2。Ubuntu 1.16.1版本的手册页:

aria2 is a utility for downloading files. The supported protocols are HTTP(S), FTP, BitTorrent, and Metalink. aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. It supports downloading a file from HTTP(S)/FTP and BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP is uploaded to the BitTorrent swarm. Using Metalink's chunk checksums, aria2 automatically validates chunks of data while downloading a file like BitTorrent.

您可以使用-x标志来指定每个服务器的最大连接数(默认为1):

aria2c -x 16 [url] 

如果同一文件可从多个位置下载，则可以选择从所有位置下载。使用-j标志指定每个静态URI的最大并行下载数量(默认为5)。

aria2c -j 5 [url] [url2]

更多信息请访问http://aria2.sourceforge.net/。对于使用信息，手册页是真正的描述性的，并在底部有一个小节提供了使用示例。在线版本可以在http://aria2.sourceforge.net/manual/en/html/README.html上找到。

他们总是说这要视情况而定，但当谈到镜像网站时，最好的是httrack。这是超级快速和容易工作。唯一的缺点是它是所谓的支持论坛，但你可以使用官方文档找到你的方法。它有GUI和CLI界面，它支持cookie，只是阅读文档，这是最好的。(用这个工具你可以在你的硬盘上下载整个网络)

httrack -c8 [url]

默认情况下，最大同时连接数限制为8，以避免服务器过载

由于还没有提到GNU并行，让我给出另一种方式:

cat url.list | parallel -j 8 wget -O {#}.html {}