aria2

Multi-protocol multi-source download utility

TLDR

Download a file

$ aria2c [https://example.com/file.zip]

Download with multiple connections

$ aria2c -x [16] [https://example.com/file.zip]

Download from multiple sources

$ aria2c [http://mirror1.com/file] [http://mirror2.com/file]

Resume interrupted download

$ aria2c -c [https://example.com/file.zip]

Download torrent

$ aria2c [file.torrent]

SYNOPSIS

aria2c [-x connections] [-c] [options] urls|torrent|metalink

aria2 is a lightweight multi-protocol download utility supporting HTTP/HTTPS, FTP, SFTP, BitTorrent, and Metalink. It can download files using multiple connections and sources simultaneously for faster speeds.
The tool is highly optimized, using minimal memory while supporting advanced features like segmented downloading and BitTorrent.

PARAMETERS

-x n, --max-connection-per-server n

Maximum connections per server

-s n, --split n

Split download into n parts

-c, --continue

Resume download

-d dir, --dir dir

Download directory

-o file, --out file

Output filename

-j n, --max-concurrent-downloads n

Parallel downloads

-i file, --input-file file

Download URLs from file

--enable-rpc

Enable JSON-RPC/XML-RPC

--seed-time minutes

BitTorrent seeding time

--select-file indices

Select files from torrent

CONFIGURATION

~/.aria2/aria2.conf

Default configuration file for setting download options, connection limits, and protocol-specific settings.

CAVEATS

Multiple connections may be limited by server. BitTorrent requires proper port forwarding for best performance. Some features require specific options enabled.

HISTORY

aria2 was developed by Tatsuhiro Tsujikawa, with initial release around 2006. It has become a popular alternative to wget and curl for its multi-connection download capability.