下载地址：http://wilmer.gaast.net/main.php/axel.html
Axel是命令行下的多线程下载工具，支持断点续传，速度通常情况下是Wget的几倍。
下载后使用如下命令编译安装：
#tar zxvf axel-1.0a.tar.gz
#cd axel-1.0a/
#./configure
#make
#make install
基本的用法如下： #axel [选项] [下载目录] [下载地址]
[root@localhost axel-1.0a]# axel --help
Usage: axel [options] url1 [url2] [url...]
-s x Specify maximum speed (bytes per second)
-n x Specify maximum number of connections
-o f Specify local output file
-S [x] Search for mirrors and download from x servers
-N Just don't use any proxy server
-q Leave stdout alone
-v More status information
-a Alternate progress indicator
-h This information
-V Version information
一个典型下载如下： #alex -n 10 -o /home/kennycx/ http://xxxx/jre.tar.gz
用10线程将指定路径的文件下载到/home/kennycx/这个目录下
#设置代理[root@localhost axel-1.0a]# export HTTP_PROXY=192.168.0.5:8080
#开始下载[root@localhost axel-1.0a]# axel -n 10 -vo . http://xxx/xx.tar.gz
initializing download: http://xxx/xx.tar.gz
File size: 1945089 bytes
Opening output file ./d4x-2.5.6.tar.gz
Starting download
[ 0%] .......... .......... .......... .......... .......... [ 15.3KB/s]
[ 2%] .......... .......... .......... .......... .......... [ 20.5KB/s]
[ 5%] .......... .......... .......... .......... .......... [ 26.3KB/s]
[ 7%] .......... .......... .......... .......... .......... [ 30.1KB/s]
[ 10%] .......... .......... .......... .......... .......... [ 34.0KB/s]
[ 13%] .......... .......... .......... .......... .......... [ 36.7KB/s]
[ 15%] .......... .......... .......... .......... .......... [ 39.0KB/s]
[ 18%] .......... .......... .......... .......... .......... [ 41.7KB/s]
[ 21%] .......... .......... .......... .......... .......... [ 42.7KB/s]
[ 23%] .......... .......... .......... .......... .......... [ 43.2KB/s]
[ 26%] .......... .......... .......... .......... .......... [ 44.6KB/s]
[ 28%] .......... .......... .......... .......... .......... [ 46.6KB/s]
[ 31%] .......... .......... .......... .......... .......... [ 46.6KB/s]
[ 34%] .......... .......... .......... .......... .......... [ 46.2KB/s]
[ 36%] .......... .......... .......... .......... .......... [ 47.5KB/s]
[ 39%] .......... .......... .......... .......... .......... [ 47.3KB/s]
[ 42%] .......... .......... .......... .......... .......... [ 47.9KB/s]
[ 44%] .......... .......... .......... .......... .......... [ 48.0KB/s]
[ 47%] .......... .......... .......... .......... .......... [ 47.2KB/s]
[ 50%] .......... .......... .......... .......... .......... [ 47.6KB/s]
[ 52%] .......... .......... .......... .......... .......... [ 47.2KB/s]
[ 55%] .......... .......... .......... .......... .......... [ 47.5KB/s]
[ 57%] .......... .......... .......... .......... .......... [ 47.8KB/s]
[ 60%] .......... .......... .......... .......... .......... [ 47.6KB/s]
[ 63%] .......... .......... .......... .......... .......... [ 47.8KB/s]
[ 65%] .......... .......... .......... .......... .......... [ 48.0KB/s]
[ 68%] .......... .......... .......... .......... .......... [ 48.0KB/s]
[ 71%] .......... .......... .......... .......... .......... [ 48.3KB/s]
[ 73%] .......... .......... .......... ..........
Connection 1 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, .......
Connection 3 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,... [ 48.1KB/s]
[ 76%] .......... .......... .......... .......... .......... [ 48.2KB/s]
[ 78%] .......... .......... .......... .......... .......... [ 47.9KB/s]
[ 81%] .......... .......... .......... .......... .......... [ 47.8KB/s]
[ 84%] .......... .......
Connection 6 finished
,,,,,,,,,, ,,,,,,,... ..........
Connection 5 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ..........
Connection 2 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, .......... [ 47.1KB/s]
[ 86%] ....
Connection 8 finished
,,,,.....
Connection 4 finished
,,,,,,,,,. .......... .......... .......... .......... [ 43.6KB/s]
[ 89%] .......... .......... .......... .......... .
Connection 9 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,......
Connection 0 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,... [ 40.3KB/s]
[ 92%] .......... .......... .......... .......... .......... [ 35.0KB/s]
[ 94%] .......... .......... .......... .......... .......... [ 27.1KB/s]
[ 97%] .......... .......... .......... .......... .........
Downloaded 1899.5 kilobytes in 1:14 seconds. (25.60 KB/s)