这是wget的出色替代者，是一款轻量级下载实用工具。它实际上是个加速器，因为它打开了多路http连接，可下载独立文件片段，因而文件下载起来更快速。
安装
# apt-get install axal
例子
# axel
videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4
Initializing download:
videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4
示例
File size: 1055736 bytes
Opening output file big_buck_bunny_720p_1mb.mp4.0
Starting download
[ 0%] .......... .......... .......... .......... .......... [ 64.9KB/s]
[ 4%] .......... .......... .......... .......... .......... [ 83.0KB/s]
[ 9%] .......... .......... .......... .......... .......... [ 91.5KB/s]
[ 14%] .......... .......... .......... .......... .......... [ 96.8KB/s]
[ 19%] .......... .......... .......... .......... .......... [ 100.2KB/s]
[ 24%] .......... .......... .......... .......... .......... [ 102.7KB/s]
[ 29%] .......... .......... .......... .......... .......... [ 104.6KB/s]
[ 33%] .......... .......... .......... .......... .......... [ 86.9KB/s]
[ 38%] .......... .......... .......... .......... .......... [ 77.1KB/s]
[ 43%] .......... .......... .......... .......... .......... [ 64.8KB/s]
[ 48%] .......... .......... .......... .......... .......... [ 66.8KB/s]
[ 53%] .......... .......... .......... .......... .......... [ 72.8KB/s]
[ 58%] .......... .......... .......... .....
Connection 1 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,..... .......... [ 74.1KB/s]
[ 63%] .......... .......... .......... .......... .......... [ 79.8KB/s]
[ 67%] .......... .......... .......... .......... .......... [ 84.5KB/s]
[ 72%] .......... .......... .....
Connection 2 finished
,,,,,,,,, ,,,,,,,,,, ,,,,,..... .......... .......... [ 86.3KB/s]
[ 77%] .......... .......... .......... .......... .......... [ 91.6KB/s]
[ 82%] .......... .......... .......... .......... .......... [ 96.7KB/s]
[ 87%] .......... .......... .......... .......... .......... [ 101.6KB/s]
[ 92%] .......... .......... .......... ...
Connection 0 finished
,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,....... .......... [ 105.9KB/s]
[ 96%] .......... .......... ..........
Downloaded 1031.0 kilobytes in 9 seconds. (108.66 KB/s)
4.Youtube-dl
这是一款专用工具，可以通过命令行从YouTube下载视频，这是个易于安装的程序包，可用来下载一大批文件。
安装
# curl https://yt-dl.org/latest/youtube-dl -o /usr/local/bin/youtube-dl
变更文件权限：
# sudo chmod a+rx /usr/local/bin/youtube-dl
例子
下载一些视频，只要为命令添加视频URL。
# youtube-dl https://www.youtube.com/watch?v=UZW2hs-2OAI
想下载视频列表，将所有URL拷贝到一个文本文件中，然后运行下面这个命令：
# youtube-dl -a <name_of_your_text_file.txt>
示例
virtual-System-Product-Name prozilla-2.0.4-master # youtube-dl -a url.txt
[youtube] xEf8A7X53YE: Downloading webpage
[youtube] xEf8A7X53YE: Downloading video info webpage
[youtube] xEf8A7X53YE: Extracting video information
[youtube] xEf8A7X53YE: Downloading MPD manifest
[download] Destination: EIC Outrage - Salute to Indian Athletes!-xEf8A7X53YE.mp4
[download] 3.9% of 70.87MiB at 82.53KiB/s ETA 14:04
5.Aria2
这是一种开源命令行下载加速器，支持多个端口，你可以使用最大带宽来下载文件，是一款易于安装、易于使用的工具。
安装
# apt-get install aria2
针对CentOS
# yum install aria2
例子
# aria2c
videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4
示例
[#28c7dd 0.9MiB/1.0MiB(93%) CN:1 DL:70KiB ETA:1s]
05/11 23:06:47 [NOTICE] Download complete:
/home/virtual/Desktop/prozilla-2.0.4-master/big_buck_bunny_720p_1mb.mp4
Download Results:
gid |stat|avg speed |path/URI
======+====+===========+=======================================================
28c7dd|OK | 72KiB/s|/home/virtual/Desktop/prozilla-2.0.4-master/big_buck_bunny_720p_1mb.mp4
Status Legend:
(OK):download completed.
6.Movgrab