10，多线程高速下载
软件 axel
安装 axel
$ sudo aptitude install axel
查看 axel
$ axel
Usage: axel [options] url1 [url2] [url...]
--max-speed=x -s x Specify maximum speed (bytes per second)
--num-connections=x -n x Specify maximum number of connections
--output=f -o f Specify local output file
--search[=x] -S [x] Search for mirrors and download from x servers
--no-proxy -N Just don't use any proxy server
--quiet -q Leave stdout alone
--verbose -v More status information
--alternate -a Alternate progress indicator
--help -h This information
--version -V Version information
Report bugs to
[email protected]
认真从上面的帮助中能够读懂参数的内容
-n 进程数，设置n个线程下载
-o 下载目录，指定下载文件的保存目录
比如，从ubuntuchina下载，地址为，
http://www.ubuntuchina.com/Download/Book01/FC.zip 学习资源，使用六个线程下载，AXEL 默认是4个。并保存到FC目录下，可以使用下面的命令：
$ axel -v -n 6 -o /home/cyq/桌面/FC
http://www.ubuntuchina.com/Download/Book01/FC.zip
结果如下，
cyq@cyq-desktop:~/桌面$ axel -v -n 6 -o /home/cyq/桌面/FC
http://www.ubuntuchina.com/Download/Book01/FC.zip
Initializing download:
http://www.ubuntuchina.com/Download/Book01/FC.zip
File size: 4920819 bytes
Opening output file /home/cyq/桌面/FC
Starting download
[ 0%] .......... .......... .......... .......... .......... [ 30.5KB/s]
[ 1%] .......... .......... .......... .......... .......... [ 28.7KB/s]
[ 2%] .......... .......... .......... .......... .......... [ 32.8KB/s]
[ 3%] .......... .......... .......... .......... .......... [ 32.5KB/s]
[ 4%] .......... .......... .......... .......... .......... [ 29.0KB/s]
[ 5%] .......... .......... .......... .......... .......... [ 28.7KB/s]
[ 6%] .......... .......... .......... .......... .......... [ 30.4KB/s]
[ 7%] .......... .......... .......... .......... .......... [ 31.0KB/s]
[ 8%] .......... .......... .......... .......... .......... [ 26.0KB/s]
[ 9%] .......... .......... .......... .......... .......... [ 26.4KB/s]
[ 10%] .......... .......... .......... .......... .......... [ 27.3KB/s]
[ 11%] .......... .......... .......... .......... .......... [ 27.3KB/s]
[ 12%] .......... .......... .......... .......... .......... [ 27.7KB/s]
[ 13%] .......... .......... .......... .......... .......... [ 28.2KB/s]
[ 14%] .......... .......... .......... .......... .......... [ 28.0KB/s]
[ 15%] .......... .......... .......... .......... .......... [ 28.2KB/s]
[ 16%] .......... .......... .......... .......... .......... [ 27.8KB/s]
[ 17%] .......... .......... .......... .......... .......... [ 27.5KB/s]
[ 18%] .......... .......... .......... .......... .......... [ 27.5KB/s]
[ 19%] .......... .......... .......... .......... .......... [ 27.9KB/s]
[ 20%] .......... .......... .......... .......... .......... [ 27.5KB/s]
[ 21%] .......... .......... .......... .......... .......... [ 27.9KB/s]
[ 22%] .......... .......... .......... .......... .......... [ 28.0KB/s]
[ 23%] .......... .......... .......... .......... .......... [ 28.5KB/s]
[ 24%] .......... .......... .......... .......... .......... [ 28.9KB/s]
[ 26%] .......... .......... .......... .......... .......... [ 29.3KB/s]
[ 27%] .......... .......... .......... .......... .......... [ 29.5KB/s]
[ 28%] .......... .......... .......... .......... .......... [ 29.9KB/s]
[ 29%] .......... .......... .......... .......... .......... [ 30.0KB/s]
[ 30%] .......... .......... .......... .......... .......... [ 30.2KB/s]
[ 31%] .......... .......... .......... .......... .......... [ 30.8KB/s]
[ 32%] .......... .......... .......... .......... .......... [ 31.0KB/s]
[ 33%] .......... .......... .......... .......... .......... [ 31.3KB/s]
[ 34%] .......... .......... .......... .......... .......... [ 31.4KB/s]
[ 35%] .......... .......... .......... .......... .......... [ 31.6KB/s]
[ 36%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 37%] .......... .......... .......... .......... .......... [ 31.7KB/s]
[ 38%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 39%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 40%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 41%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 42%] .......... .......... .......... .......... .......... [ 32.0KB/s]
[ 43%] .......... .......... .......... .......... .......... [ 32.4KB/s]
[ 44%] .......... .......... .......... .......... .......... [ 32.5KB/s]
[ 45%] .......... .......... .......... .......... .......... [ 32.7KB/s]
[ 46%] .......... .......... .......... .......... .......... [ 32.5KB/s]
[ 47%] .......... .......... .......... .......... .......... [ 32.2KB/s]
[ 48%] .......... .......... .......... .......... .......... [ 32.3KB/s]
[ 49%] .......... .......... .......... .......... .......... [ 32.3KB/s]
[ 50%] .......... .......... .......... .......... .......... [ 32.2KB/s]
[ 52%] .......... .......... .......... .......... .......... [ 32.4KB/s]
[ 53%] .......... .......... .......... .......... .......... [ 32.1KB/s]
[ 54%] .......... .......... .......... .......... .......... [ 32.1KB/s]
[ 55%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 56%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 57%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 58%] .......... .......... .......... .......... .......... [ 32.0KB/s]
[ 59%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 60%] .......... .......... .......... .......... .......... [ 31.7KB/s]
[ 61%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 62%] .......... .......... .......... .......... .......... [ 32.0KB/s]
[ 63%] .......... ......
Connection 2 finished
,,,,,,,,,, ,,,,,,.... .......... .......... .......... [ 31.9KB/s]
[ 64%] .......... .......... .......... .......... .......... [ 32.0KB/s]
[ 65%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 66%] .......... .......... .......... .......... .......... [ 31.7KB/s]
[ 67%] .......... .......... .......... .......... .......... [ 31.6KB/s]
[ 68%] .......... .......... .......... .......... .......... [ 31.6KB/s]
[ 69%] .......... .......... .......... .......... .......... [ 31.5KB/s]
[ 70%] .......... .......... .......... .......... .......... [ 31.7KB/s]
[ 71%] .......... .......... .......... .......... .......... [ 31.7KB/s]
[ 72%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 73%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 74%] .......... .......... .......... .......... .......... [ 32.0KB/s]
[ 75%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 76%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 78%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 79%] .......... .......... .......... .......... .......... [ 31.8KB/s]
[ 80%] .......... .......... .......... .......... .......... [ 31.9KB/s]
[ 81%] .........
Connection 3 finished
,,,,,,,,,. .......... .......... .......... .......... [ 31.7KB/s]
[ 82%] .......... .......... .......... .......... .......... [ 31.5KB/s]
[ 83%] .......... .......... .......... .......... .......... [ 31.5KB/s]
[ 84%] .......... .......... .......... ..........
Connection 5 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, .......... [ 31.5KB/s]
[ 85%] .......... .......... .......... .......... .......... [ 30.1KB/s]
[ 86%] .......... .......... .......... .......... .......... [ 30.3KB/s]
[ 87%] .......... .......... .......... .......... .......... [ 30.3KB/s]
[ 88%] .........
Connection 0 finished
,,,,,,,,,. .......... .......... .......... .......... [ 30.2KB/s]
[ 89%] .......... .......... .......... .......... .......... [ 30.2KB/s]
[ 90%] .......... .......... ...
Connection 4 finished
,,,,,,,,,, ,,,,,,,,,, ,,,
Connection 1 timed out
,,,,,,,,,, ,,,,,,,,,, ,,,....... .......... .......... [ 28.1KB/s]
[ 91%] .......... .......... .......... .......... .......... [ 28.2KB/s]
[ 92%] .......... .......... .......... .......... .......... [ 28.4KB/s]
[ 93%] .......... .......... .......... .......... .......... [ 28.5KB/s]
[ 94%] .......... .......... .......... .......... .......... [ 28.6KB/s]
[ 95%] .......... .......... .......... .......... .......... [ 28.7KB/s]
[ 96%] .......... .......... .......... .......... .......... [ 28.7KB/s]
[ 97%] .......... .......... .......... .......... .......... [ 28.7KB/s]
[ 98%] .......... .......... .......... .......... .......... [ 28.8KB/s]
[ 99%] .....
Downloaded 4805.5 kilobytes in 2:46 seconds. (28.79 KB/s)