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 the downloaded file.

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

-l, --log=LOG::
	The file name of the log file. 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 the seconds to wait to retry after an error
        has occured. Specify a value between 0 and 60.
        Default: 5

-t, --timeout=SEC::
        Set timeout in seconds. 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 all URLs.

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

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

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

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

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

 --ftp-passwd=PASSWD::
          Set FTP password. This affects 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 have a lowest speed limit.
                              You can append K or M(1K = 1024, 1M = 1024K).
                              This option does not affect BitTorrent downloads.
                              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 the file.
                              Default: none

 --allow-overwrite=true|false::
  If false, aria2 doesn't download a file which
                              already exists but the corresponding .aria2 file
                              doesn't exist.
                              Default: false

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

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

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

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

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

 -i, --input-file=FILE::
        Downloads URIs found in FILE. You can specify
                              multiple URIs for a single entity: separate
                              URIs on a single line using the TAB character.
                              Reads input from stdin when '-' is specified.

 -j, --max-concurrent-downloads=N::
         Set maximum number of concurrent downloads.
                              It should be used with the -i option.
                              Default: 5

 --load-cookies=FILE::
          Load cookies from FILE. The format of FILE is
                              the same used by Netscape and Mozilla.

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

 --select-file=INDEX...::
       Set file to download by specifing its index.
                              You can find the file index using the
                              --show-files option. Multiple indexes can be
                              specified by using ',', for example: "3,6".
                              You can also use '-' to specify a range: "1-5".
                              ',' and '-' can be used together.
                              When used with the -M option, index may vary
                              depending on the query(see --metalink-* options).

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

 --follow-torrent=true|false::
  Set to false to prevent aria2 from
                              entering BitTorrent mode even if the filename of
                              the downloaded file ends with .torrent.
                              Default: true

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

 --listen-port=PORT::
         Set TCP port number for BitTorrent downloads.
                              Default: 6881-6999

 --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'

 --seed-time=MINUTES::
           Specify seeding time in minutes. Also see the
                              --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.

 --peer-id-prefix=PEERI_ID_PREFIX::
             Specify the prefix of peer ID. The peer ID in
                              in BitTorrent is 20 byte length. If more than 20
                              bytes are specified, only first 20
                              bytes are used. If less than 20 bytes are
                              specified, the random alphabet characters are
                              added to make it's length 20 bytes.
                              Default: -aria2-
 
 -M, --metalink-file=METALINK_FILE::
 The file path to .metalink file.

 -C, --metalink-servers=NUM_SERVERS::
   The number of servers to connect to
                              simultaneously.
                              Default: '5'

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

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

 --metalink-os=OS::
   The operating system of the file to download.

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

 --follow-metalink=true|false::
   Set to false to prevent aria2 from
                              entering Metalink mode even if the filename of
                              the 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 will fail.

FILE::
 Specify files in multi-file torrent to download. Use in conjunction with the
 -T option. This argument is ignored if you specify the --select-file option.

EXAMPLES
--------

 Download a file using 1 connection::
  aria2c http://AAA.BBB.CCC/file.zip
 Download a file using 2 connections::
  aria2c -s 2 http://AAA.BBB.CCC/file.zip
 Download a file using 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 files listed in a text file. 5 files are downloaded concurrently::
  aria2c -i uris.txt -j 5
 Download files passed through stdin::
  cat uris.txt | aria2c -i -
 Download a file using local cookies::
  aria2c --load-cookies cookies.txt http://AAA.BBB.CCC/file.zip

 Download a torrent::
  aria2c -o test.torrent http://AAA.BBB.CCC/file.torrent
 Download a torrent using a local .torrent file::
  aria2c -T test.torrent
 Download only selected files::
  aria2c -T test.torrent dir/file1.zip dir/file2.zip
 Download only selected files using index::
  aria2c -T test.torrent --select-file 1,3-5
 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 a local .metalink file::
  aria2c -M test.metalink
 Metalink downloading with preferences::
  aria2c -M test.metalink --metalink-version=1.1.1 --metalink-language=en-US
 Download only selected files::
  aria2c -M test.metalink --metalink-language=en-US dir/file1.zip dir/file2.zip
 Download only selected files using index::
  aria2c -M test.metalink --metalink-language=en-US --select-file 1,3-5
 Print file listing of .metalink file::
  aria2c -M test.metalink -S --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