aria2c

Multi-protocol multi-source download utility

TLDR

Download single file

$ aria2c [URL]

Download with 16 connections

$ aria2c -x 16 -s 16 [URL]

Download to specific directory

$ aria2c -d [/path/to/dir] [URL]

Continue interrupted download

$ aria2c -c [URL]

Download from magnet link

$ aria2c "[magnet:?xt=urn:btih:...]"

Download with RPC enabled

$ aria2c --enable-rpc --rpc-listen-all

SYNOPSIS

aria2c [options] [URL|TORRENT|METALINK]

aria2c is the command-line interface for aria2, the multi-protocol download utility. It supports parallel downloads, segmented downloading, and multiple source URLs for maximizing download speed.The tool handles HTTP/HTTPS, FTP, SFTP, BitTorrent, and Metalink, with extensive configuration options.

PARAMETERS

-x n

Max connections per server (default: 1)

-s n

Split file into n segments

-c

Continue/resume download

-d dir

Download directory

-o file

Output filename

--file-allocation method

none, prealloc, trunc, falloc

--max-overall-download-limit speed

Overall speed limit

--enable-rpc

Enable RPC interface

--bt-enable-lpd

Enable Local Peer Discovery

--dht-listen-port port

DHT port for BitTorrent

-j n

Maximum number of parallel downloads (default: 5)

--seed-time minutes

Seed time in minutes for BitTorrent (0 = no seeding)

-i file, --input-file file

Read URLs from file

-q, --quiet

Quiet mode

CONFIGURATION

~/.aria2/aria2.conf

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

CAVEATS

aria2c is the same as aria2; the c stands for command-line. Server may limit connections despite client settings. BitTorrent features need proper network configuration.

HISTORY

aria2 was created by Tatsuhiro Tsujikawa and first released around 2006. It is written in C++ and supports HTTP/HTTPS, FTP, SFTP, BitTorrent, and Metalink.