Aria2 is an open source and free lightweight multi-protocol & multi-server command-line download utility for Windows, Linux and Mac OSX.

It has an ability to download files from multiple protocols and sources including HTTP/HTTPS, FTP, BitTorrent and Metalink. It improves download speed by utilizing maximum download bandwidth and speeds up your download experience.

Features

Multi-Connection Download – It can download a file from multiple sources/protocols and attempt to use your maximum download bandwidth and improve overall download experience.
Lightweight – It doesn’t take much memory and CPU utilization. The HTTP/FTP downloads use only 4MB memory and 9MB for BitTorrent downloads.
Fully Featured BitTorrent Client – A fully featured BitTorrent client with support for DHT, PEX, Encryption, Magnet URI, Web-Seeding, Selective Downloads, Local Peer Discovery and UDP tracker.
Metalink Enabled – It supports Metalink version 4 and 3, which provides the file verification for HTTP/FTP/SFTP/BitTorrent integration and the different configurations for location, language, OS, etc.
Remote Control – A RPC interface support to control the aria2 process. The supported interfaces are JSON-RPC (over HTTP and WebSocket) and XML-RPC.

Aria2D is a Simple Aria2 GUI for macOS. Aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink. Aria2c (>=1.15.2) with RPC enabled. RPC user and password/RPC secret can be set in options. Also rpc-listen-all and rpc-allow-origin-all needs to be switched on.

Please note, we should not consider aria2 is a replacement of wget, curl or torrent clients, but rather considered as an alternative with more support and download options.

Use your Aria 2 while barefoot. The scale cannot measure body fat percentage if you’re wearing shoes or socks. Make sure your feet are dry before weighing yourself. Place your Aria 2 on a hard, flat surface during use. Using the scale on a soft surface - like carpet or linoleum. 之前写的一篇文章Mac配置Aria2，高速下载百度云，里面涉及到命令行操作，有些读者可能某些步骤难以正确配置。为了解决这些读者的困惑，这篇文章介绍如何使用 Aria2 Mac 客户端，无需繁琐配置，轻松加速下载百度云资源。 Aria2GUI for macOS 客户端.

Installing Aria2 Command-Line Download Manager in Linx

This article explains how to install Aria2 command-line download utility in RHEL, CentOS, Fedora and Debian, Ubuntu, Linux Mint systems with some useful download techniques and usage.

On RHEL/CentOS/Fedora

First, you need to download and enable the EPEL repository under RHEL/CentOS systems. (Note:Fedora users don’t need to add any repository, simply install aria2 using dnf command as shown).

Now install Aria2 package from the enabled EPEL repository under your system using YUM command tool.

Sample Output :

On Debian/Ubuntu/Linux Mint

Sample Output

Note: Sometimes, the default repositories don’t provide the latest version. So, in that case you might need to compile and install it from the source package as shown here.

Aria2 Download Usage & Examples

Here we will explore some of useful aria2 download usage and options with their examples.

Download from WEB

To download a single file from the web, execute the command as.

Download from Two sources

To download multiple files, say two files, then run the following command.

Download using Two connections

To download file using only two connections per host, then use the option -x2 (connection 2) as shown below.

Download from BitTorrent

To download torrent file use the following command.

Download from Metalink

To download a metalink file, use the following command.

Download URLs found in a text file

Aria 2 Gui Mac Os

To download a list of URL’s written in a text file called downloadurls.txt, then use the following command. The URL‘s should contain one download per line in a downloadurls.txt file.

Set Download Speed Limit

To set a download speed limit per download, use the following option.

Aria2 Gui Mac

For more usage and options, open a terminal and run the command as “man aria2c“. There are also graphical front-ends available for Aria2, you can find them at aria2 page.