aria2/doc/aria2c.1.txt

ARIA2C(1)
=========
Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

NAME
----
aria2c - The high speed download utility

SYNOPSIS
--------
-----------------------------------------
aria2c [OPTIONS] URL ...
aria2c [OPTIONS] -T TORRENT_FILE FILE ...
aria2c [OPTIONS] -M METALINK_FILE
-----------------------------------------

DESCRIPTION
-----------
aria2 is a utility for downloading files. It has completely new design
concept from its predecessor, Aria, and is written from scratch.
aria2 has a segmented downloading engine in its core.
It can download one file from multiple URLs or multiple connections from one
URL. This results in very high speed downloading, much faster than ordinary
browsers. This engine in was implemented in a single-thread model.
The architecture is clean and easy to extend. aria2 currently supports HTTP,
FTP, and BitTorrent. It also supports Metalink version 3.0.

Please visit the project web site at http://aria2.sourceforge.net

OPTIONS
-------
-d, --dir=DIR::
	The directory to store downloaded file.

-o, --out=FILE::
	The file name for downloaded file.

-l, --log=LOG::
	The file path to store log. If '-' is specified, log is written to
	stdout.

-D, --daemon::
	Run as daemon.

-s, --split=N::
	Download a file using 'N' connections. 'N' must be between '1' and '5'.
	This option affects all URLs. Thus, aria2 connects to each URL with 'N'
	connections.
        Default: '1'

--retry-wait=SEC::
	Set amount of time in second between requests for errors. Specify a
	value between '0' and '60'.
	Default: '5'

-t, --timeout=SEC::
        Set timeout in second.
	Default: '60'

 -m, --max-tries=N::
            Set number of tries. '0' means unlimited.
            Default: '5'

 --http-proxy=HOST:PORT::
       Use HTTP proxy server. This affects to all URLs.

 --http-user=USER::
             Set HTTP user. This affects to all URLs.

 --http-passwd=PASSWD::
         Set HTTP password. This affects to all URLs.

 --http-proxy-user=USER::
       Set HTTP proxy user. This affects to all URLs

 --http-proxy-passwd=PASSWD::
   Set HTTP proxy password. This affects to all URLs.

 --http-proxy-method=METHOD::
    Set the method to use in proxy request.
    'METHOD' is either 'get' or 'tunnel'.
    Default: 'tunnel'

 --http-auth-scheme=SCHEME::
    Set HTTP authentication scheme. Currently, 'basic'
                              is the only supported scheme.
                              Default: 'basic'

 --referer=REFERER::
            Set Referer. This affects to all URLs.

 --ftp-user=USER::
              Set FTP user. This affects to all URLs.
              Default: 'anonymous'

 --ftp-passwd=PASSWD::
          Set FTP password. This affects to all URLs.
          Default: 'ARIA2USER@'

 --ftp-type=TYPE::
              Set FTP transfer type. TYPE is either 'binary'
                              or 'ascii'.
                              Default: 'binary'

 -p, --ftp-pasv::
               Use passive mode in FTP.

 --ftp-via-http-proxy=METHOD::
  Use HTTP proxy in 'FTP'. 'METHOD' is either 'get' or
                              'tunnel'.
                              Default: 'tunnel'

 --lowest-speed-limit=SPEED::
   Close connection if download speed is lower than
                              or equal to this value(bytes per sec).
                              0 means aria2 does not care lowest speed limit.
                              You can append 'K' or 'M'(1K = 1024, 1M = 1024K).
                              This option does not affect BitTorrent download.
                              Default: '0'

 --max-download-limit=SPEED::
   Set max download speed in bytes per sec.
                              '0' means unrestricted.
                              You can append 'K' or 'M'(1K = 1024, 1M = 1024K).
                              Default: '0'

 --file-allocation=METHOD::
     Specify file allocation method. 'METHOD' is either
                              'none' or 'prealloc'.
                              'none' doesn't pre-allocate file space. 'prealloc'
                              pre-allocates file space before download begins.
                              This may take some time depending on the size of
                              file.
                              Default: 'none'

 --allow-overwrite=true|false::
  If this option set to 'false', aria2 doesn't
                              download a file which already exists in the file
                              system but its corresponding .aria2 file doesn't
                              exist.
                              Default: 'false'

 --check-integrity=true|false::
  Check file integrity by validating piece hash.
                              This option makes effect in BitTorrent download
                              and Metalink with chunk checksums.
                              Use this option to redownload a damaged portion of
                              file.
                              You may need to specify '--allow-overwrite=true'
                              option if .aria2 file doesn't exist.
                              Default: 'false'

 --realtime-chunk-checksum=true|false::
  Validate chunk checksum while downloading
                              a file in Metalink mode. This option makes effect
                              in Metalink with chunk checksums.
                              Default: 'true'

 -c, --continue::
               Continue downloading a partially downloaded
                         file. Use this option to resume a download started                              by web browsers or another programs
                         which download files sequentially from the beginning.
                              Currently this option is applicable to http(s)/
                              ftp downloads.

 -U, --user-agent=USER_AGENT::
  Set user agent for http(s) downloads.

 -n, --no-netrc::
               Disables netrc support.


 -T, --torrent-file=TORRENT_FILE::
  The file path to .torrent file.

 --follow-torrent=true|false::
  Setting this option to 'false' prevents aria2 to
                              enter BitTorrent mode even if the filename of
                              downloaded file ends with .torrent.
                              Default: 'true'

 -S, --show-files::
             Print file listing of .torrent file and exit.

 --direct-file-mapping=true|false::
 Directly read from and write to each file
                              mentioned in .torrent file.
                              Default: 'true'

 --listen-port=PORT::
           Set port number to listen to for peer connection.

 --max-upload-limit=SPEED::
     Set max upload speed in bytes per sec.
                              '0' means unrestricted.
                              You can append 'K' or 'M'(1K = 1024, 1M = 1024K).
                              Default: '0'

 --select-file=INDEX...::
       Set file to download by specifing its index.
                              You can know file index through '--show-files'
                              option. Multiple indexes can be specified by using
                              ',' like "3,6".
                              You can also use '-' to specify rangelike "1-5".
                              ',' and '-' can be used together.

 --seed-time=MINUTES::
          Specify seeding time in minutes. See also
                              '--seed-ratio' option.

 --seed-ratio=RATIO::
           Specify share ratio. Seed completed torrents until
                              share ratio reaches 'RATIO'. '1.0' is encouraged.
                              If '--seed-time' option is specified along with
                              this option, seeding ends when at least one of
                              the conditions is satisfied.

 -M, --metalink-file=METALINK_FILE::
 The file path to .metalink file.

 -C, --metalink-servers=NUM_SERVERS::
 The number of servers to connect to
                              simultaneously. If more than one connection per
                              server is required, use '-s' option.
                              Default: '15'

 --metalink-version=VERSION::
   The version of file to download.

 --metalink-language=LANGUAGE::
 The language of file to download.

 --metalink-os=OS::
             The operating system the file is targeted.

 --metalink-location=LOCATION::
 The location of the prefered server.

 --follow-metalink=true|false::
  Setting this option to 'false' prevents aria2 to
                              enter Metalink mode even if the filename of
                              downloaded file ends with .metalink.
                              Default: 'true'

 -v, --version::
                Print the version number and exit.

 -h, --help::
                   Print this message and exit.

URL::
 You can specify multiple URLs. All URLs must point to the same file
 or downloading fails.

FILE::
 Specify files in multi-file torrent to download. Use conjunction with
 '-T' option. This arguments are ignored if you specify '--select-file' option.

EXAMPLES
--------

 Download a file by 1 connection::
  aria2c http://AAA.BBB.CCC/file.zip
 Download a file by 2 connections::
  aria2c -s 2 http://AAA.BBB.CCC/file.zip
 Download a file by 2 connections, each connects to a different server::
  aria2c http://AAA.BBB.CCC/file.zip http://DDD.EEE.FFF/GGG/file.zip
 You can mix up different protocols::
  aria2c http://AAA.BBB.CCC/file.zip ftp://DDD.EEE.FFF/GGG/file.zip

 Download a torrent::
  aria2c -o test.torrent http://AAA.BBB.CCC/file.torrent
 Download a torrent using local .torrent file::
  aria2c -T test.torrent
 Download only selected files::
  aria2c -T test.torrent dir/file1.zip dir/file2.zip
 Print file listing of .torrent file::
  aria2c -T test.torrent -S

 Metalink downloading::
  aria2c --lowest-speed-limit 10K http://AAA.BBB.CCC/file.metalink
 Download a file using local .metalink file::
  aria2c -M test.metalink
 Metalink downloading with preferences::
  aria2c -M test.metalink --metalink-version=1.1.1 --metalink-language=en-US

FILES
-----
aria2.conf::
	User configuration file.
	It must be placed under ~/.aria2 and must be named as aria2.conf.
	In each line, there is 1 parameter whose syntax is name=value pair,
	where name is the long command-line option name without '--' prefix.
	The lines beginning '#' are treated as comments.

	Example:

	# sample configuration file for aria2c
	file-allocation=prealloc
	listen-port=60000
	seed-ratio=1.0
	max-upload-limit=40K
	ftp-pasv=true

REPORTING BUGS
--------------
Report bugs to Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

AUTHOR
------
Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

COPYRIGHT
---------
Copyright (C) 2006, 2007 Tatsuhiro Tsujikawa