-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. Additionally,
options can be specified after each line of URI. This optional line must start with one or more white
spaces and have one option per single line. See Input File subsection for details.
|
-l, --log=LOG
The file name of the log file. If - is specified, log is written to stdout. If empty string("") is
specified, log is not written to file.
|
-j, --max-concurrent-downloads=N
Set maximum number of parallel downloads for every static (HTTP/FTP) URI, torrent and metalink. See
also -s and -C option. Default: 5
|
-V, --check-integrity[=true|false]
Check file integrity by validating piece hashes or a hash of entire file. This option has effect only
in BitTorrent, Metalink downloads with checksums or HTTP(S)/FTP downloads with --checksum option. If
piece hashes are provided, this option can detect damaged portions of a file and re-download them. If
a hash of entire file is provided, hash check is only done when file has been already download. This
is determined by file length. If hash check fails, file is re-downloaded from scratch. If both piece
hashes and a hash of entire file are provided, only piece hashes are used. Default: false
|
-c, --continue[=true|false]
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.
|
-h, --help[=TAG|KEYWORD]
The help messages are classified with tags. A tag starts with "#". For example, type "--help=#http"
to get the usage for the options tagged with "#http". If non-tag word is given, print the usage for
the options whose name includes that word. Available Values: #basic, #advanced, #http, #https, #ftp,
#metalink, #bittorrent, #cookie, #hook, #file, #rpc, #checksum, #experimental, #deprecated, #help,
#all Default: #basic
HTTP/FTP Options
--all-proxy=PROXY
Use this proxy server for all protocols. To erase previously defined proxy, use "". You can override
this setting and specify a proxy server for a particular protocol using --http-proxy, --https-proxy
and --ftp-proxy options. This affects all URIs. The format of PROXY is
[http://][USER:PASSWORD@]HOST[:PORT]. See also ENVIRONMENT section.
Note
If user and password are embedded in proxy URI and they are also specified by
--{http,https,ftp,all}-proxy-{user,passwd} options, those appeared later have precedence. For
example, you have http-proxy-user="myname", http-proxy-passwd="mypass" in aria2.conf and you specify
--http-proxy="http://proxy" in command-line, then you get HTTP proxy "http://proxy" with user
"myname" and password "mypass". Another example: if you specified in command-line
--http-proxy="http://user:pass@proxy" --http-proxy-user="myname" --http-proxy-passwd="mypass", then
you will get HTTP proxy "http://proxy" with user "myname" and password "mypass". One more example: if
you specified in command-line --http-proxy-user="myname" --http-proxy-passwd="mypass"
--http-proxy="http://user:pass@proxy", then you get HTTP proxy "http://proxy" with user "user" and
password "pass".
|
--all-proxy-passwd=PASSWD
Set password for --all-proxy option.
|
--all-proxy-user=USER
Set user for --all-proxy option.
|
--connect-timeout=SEC
Set the connect timeout in seconds to establish connection to HTTP/FTP/proxy server. After the
connection is established, this option makes no effect and --timeout option is used instead. Default:
60
|
--dry-run[=true|false]
If true is given, aria2 just checks whether the remote file is available and doesn’t download data.
This option has effect on HTTP/FTP download. BitTorrent downloads are canceled if true is specified.
Default: false
|
--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
|
-x, --max-connection-per-server=NUM
The maximum number of connections to one server for each download. Default: 1
|
--max-file-not-found=NUM
If aria2 receives ‘file not found’ status from the remote HTTP/FTP servers NUM times without getting
a single byte, then force the download to fail. Specify 0 to disable this option. This options is
effective only when using HTTP/FTP servers. Default: 0
|
-m, --max-tries=N
Set number of tries. 0 means unlimited. See also --retry-wait. Default: 5
|
-k, --min-split-size=SIZE
aria2 does not split less than 2*SIZE byte range. For example, let’s consider downloading 20MiB file.
If SIZE is 10M, aria2 can split file into 2 range [0-10MiB) and [10MiB-20MiB) and download it using 2
sources(if --split >= 2, of course). If SIZE is 15M, since 2*15M > 20MiB, aria2 does not split file
and download it using 1 source. You can append K or M(1K = 1024, 1M = 1024K). Possible Values:
1M-1024M Default: 20M
|
-n, --no-netrc[=true|false]
Disables netrc support. netrc support is enabled by default.
|
--no-proxy=DOMAINS
Specify comma separated hostnames, domains and network address with or without CIDR block where proxy
should not be used.
Note
For network address with CIDR block, only IPv4 address works. Current implementation does not resolve
hostname in URI to compare network address specified in --no-proxy. So it is only effecive if URI has
numeric IP addresses.
|
-o, --out=FILE
The file name of the downloaded file. When -Z option is used, this option is ignored.
Note
In Metalink or BitTorrent download you cannot specify file name. The file name specified here is only
used when the URIs fed to aria2 are done by command line without -i, -Z option. For example: aria2c
-o myfile.zip "http://mirror1/file.zip" "http://mirror2/file.zip"
|
--proxy-method=METHOD
Set the method to use in proxy request. METHOD is either get or tunnel. HTTPS downloads always use
tunnel regardless of this option. Default: get
|
-R, --remote-time[=true|false]
Retrieve timestamp of the remote file from the remote HTTP/FTP server and if it is available, apply
it to the local file. Default: false
|
--reuse-uri[=true|false]
Reuse already used URIs if no unused URIs are left. Default: true
|
--retry-wait=SEC
Set the seconds to wait between retries. With SEC > 0, aria2 will retry download when the HTTP server
returns 503 response. Default: 0
|
--server-stat-of=FILE
Specify the filename to which performance profile of the servers is saved. You can load saved data
using --server-stat-if option. See Server Performance Profile subsection below for file format.
|
--server-stat-if=FILE
Specify the filename to load performance profile of the servers. The loaded data will be used in some
URI selector such as feedback. See also --uri-selector option. See Server Performance Profile
subsection below for file format.
|
--server-stat-timeout=SEC
Specifies timeout in seconds to invalidate performance profile of the servers since the last contact
to them. Default: 86400 (24hours)
|
-s, --split=N
Download a file using N connections. If more than N URIs are given, first N URIs are used and
remaining URIs are used for backup. If less than N URIs are given, those URIs are used more than once
so that N connections total are made simultaneously. The number of connections to the same host is
restricted by --max-connection-per-server option. Please see -j and --min-split-size option too.
Please note that in Metalink download, this option has no effect and use -C option instead. Default:
5
|
--stream-piece-selector=SELECTOR
Specify piece selection algorithm used in HTTP/FTP download. Piece means fixed length segment which
is downloaded in parallel in segmented download. If default is given, aria2 selects piece so that it
reduces the number of establishing connection. This is reasonable default behaviour because
establishing connection is an expensive operation. If inorder is given, aria2 selects piece which has
minimum index. Index=0 means first of the file. This will be useful to view movie while downloading
it. --enable-http-pipelining option may be useful to reduce reconnection overhead. Please note that
aria2 honors --min-split-size option, so it will be necessary to specify a reasonable value to
--min-split-size option. If geom is given, at the beginning aria2 selects piece which has minimum
index like inorder, but it exponentially increasingly keeps space from previously selected piece.
This will reduce the number of establishing connection and at the same time it will download the
beginning part of the file first. This will be useful to view movie while downloading it. Default:
default
|
-t, --timeout=SEC
Set timeout in seconds. Default: 60
|
--uri-selector=SELECTOR
Specify URI selection algorithm. The possible values are inorder, feedback and adaptive. If inorder
is given, URI is tried in the order appeared in the URI list. If feedback is given, aria2 uses
download speed observed in the previous downloads and choose fastest server in the URI list. This
also effectively skips dead mirrors. The observed download speed is a part of performance profile of
servers mentioned in --server-stat-of and --server-stat-if options. If adaptive is given, selects one
of the best mirrors for the first and reserved connections. For supplementary ones, it returns
mirrors which has not been tested yet, and if each of them has already been tested, returns mirrors
which has to be tested again. Otherwise, it doesn’t select anymore mirrors. Like feedback, it uses a
performance profile of servers. Default: feedback
HTTP Specific Options
--ca-certificate=FILE
Use the certificate authorities in FILE to verify the peers. The certificate file must be in PEM
format and can contain multiple CA certificates. Use --check-certificate option to enable
verification.
|
--certificate=FILE
Use the client certificate in FILE. The certificate must be in PEM format. You may use --private-key
option to specify the private key.
|
--check-certificate[=true|false]
Verify the peer using certificates specified in --ca-certificate option. Default: true
|
--http-accept-gzip[=true|false]
Send "Accept: deflate, gzip" request header and inflate response if remote server responds with
"Content-Encoding: gzip" or "Content-Encoding: deflate". Default: false
Note
Some server responds with "Content-Encoding: gzip" for files which itself is gzipped file. aria2
inflates them anyway because of the response header.
|
--http-auth-challenge[=true|false]
Send HTTP authorization header only when it is requested by the server. If false is set, then
authorization header is always sent to the server. There is an exception: if username and password
are embedded in URI, authorization header is always sent to the server regardless of this option.
Default: false
|
--http-no-cache[=true|false]
Send Cache-Control: no-cache and Pragma: no-cache header to avoid cached content. If false is given,
these headers are not sent and you can add Cache-Control header with a directive you like using
--header option. Default: true
|
--http-user=USER
Set HTTP user. This affects all URIs.
|
--http-passwd=PASSWD
Set HTTP password. This affects all URIs.
|
--http-proxy=PROXY
Use this proxy server for HTTP. To erase previously defined proxy, use "". See also --all-proxy
option. This affects all URIs. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]
|
--http-proxy-passwd=PASSWD
Set password for --http-proxy option.
|
--http-proxy-user=USER
Set user for --http-proxy option.
|
--https-proxy=PROXY
Use this proxy server for HTTPS. To erase previously defined proxy, use "". See also --all-proxy
option. This affects all URIs. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]
|
--https-proxy-passwd=PASSWD
Set password for --https-proxy option.
|
--https-proxy-user=USER
Set user for --https-proxy option.
|
--private-key=FILE
Use the private key in FILE. The private key must be decrypted and in PEM format. The behavior when
encrypted one is given is undefined. See also --certificate option.
|
--referer=REFERER
Set Referer. This affects all URIs.
|
--enable-http-keep-alive[=true|false]
Enable HTTP/1.1 persistent connection. Default: true
|
--enable-http-pipelining[=true|false]
Enable HTTP/1.1 pipelining. Default: false
Note
In performance perspective, there is usually no advantage to enable this option.
|
--header=HEADER
Append HEADER to HTTP request header. You can use this option repeatedly to specify more than one
header: aria2c --header="X-A: b78" --header="X-B: 9J1" "http://host/file"
|
--load-cookies=FILE
Load Cookies from FILE using the Firefox3 format (SQLite3), Chromium/Google Chrome (SQLite3) and the
Mozilla/Firefox(1.x/2.x)/Netscape format.
Note
If aria2 is built without libsqlite3, then it doesn’t support Firefox3 and Chromium/Google Chrome
cookie format.
|
--save-cookies=FILE
Save Cookies to FILE in Mozilla/Firefox(1.x/2.x)/ Netscape format. If FILE already exists, it is
overwritten. Session Cookies are also saved and their expiry values are treated as 0. Possible
Values: /path/to/file
|
--use-head[=true|false]
Use HEAD method for the first request to the HTTP server. Default: false
|
-U, --user-agent=USER_AGENT
Set user agent for HTTP(S) downloads. Default: aria2/$VERSION, $VERSION is replaced by package
version.
FTP Specific Options
--ftp-user=USER
Set FTP user. This affects all URIs. Default: anonymous
|
--ftp-passwd=PASSWD
Set FTP password. This affects all URIs. If user name is embedded but password is missing in URI,
aria2 tries to resolve password using .netrc. If password is found in .netrc, then use it as
password. If not, use the password specified in this option. Default: ARIA2USER@
|
-p, --ftp-pasv[=true|false]
Use the passive mode in FTP. If false is given, the active mode will be used. Default: true
|
--ftp-proxy=PROXY
Use this proxy server for FTP. To erase previously defined proxy, use "". See also --all-proxy
option. This affects all URIs. The format of PROXY is [http://][USER:PASSWORD@]HOST[:PORT]
|
--ftp-proxy-passwd=PASSWD
Set password for --ftp-proxy option.
|
--ftp-proxy-user=USER
Set user for --ftp-proxy option.
|
--ftp-type=TYPE
Set FTP transfer type. TYPE is either binary or ascii. Default: binary
|
--ftp-reuse-connection[=true|false]
Reuse connection in FTP. Default: true
BitTorrent/Metalink Options
--select-file=INDEX...
Set file to download by specifying 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: 1-5,8,9. When used with the -M option, index
may vary depending on the query (see --metalink-* options).
Note
In multi file torrent, the adjacent files specified by this option may also be downloaded. This is by
design, not a bug. A single piece may include several files or part of files, and aria2 writes the
piece to the appropriate files.
|
-S, --show-files[=true|false]
Print file listing of .torrent, .meta4 and .metalink file and exit. In case of .torrent file,
additional information (infohash, piece length, etc) is also printed.
BitTorrent Specific Options
--bt-enable-lpd[=true|false]
Enable Local Peer Discovery. If a private flag is set in a torrent, aria2 doesn’t use this feature
for that download even if true is given. Default: false
|
--bt-external-ip=IPADDRESS
Specify the external IP address to report to a BitTorrent tracker. Although this function is named
"external", it can accept any kind of IP addresses. IPADDRESS must be a numeric IP address.
|
--bt-hash-check-seed[=true|false]
If true is given, after hash check using --check-integrity option and file is complete, continue to
seed file. If you want to check file and download it only when it is damaged or incomplete, set this
option to false. This option has effect only on BitTorrent download. Default: true
|
--bt-lpd-interface=INTERFACE
Use given interface for Local Peer Discovery. If this option is not specified, the default interface
is chosen. You can specify interface name and IP address. Possible Values: interface, IP addres
|
--bt-max-open-files=NUM
Specify maximum number of files to open in each BitTorrent download. Default: 100
|
--bt-max-peers=NUM
Specify the maximum number of peers per torrent. 0 means unlimited. See also
--bt-request-peer-speed-limit option. Default: 55
|
--bt-metadata-only[=true|false]
Download metadata only. The file(s) described in metadata will not be downloaded. This option has
effect only when BitTorrent Magnet URI is used. See also --bt-save-metadata option. Default: false
|
--bt-min-crypto-level=plain|arc4
Set minimum level of encryption method. If several encryption methods are provided by a peer, aria2
chooses the lowest one which satisfies the given level. Default: plain
|
--bt-require-crypto[=true|false]
If true is given, aria2 doesn’t accept and establish connection with legacy BitTorrent
handshake(\19BitTorrent protocol). Thus aria2 always uses Obfuscation handshake. Default: false
|
--bt-request-peer-speed-limit=SPEED
If the whole download speed of every torrent is lower than SPEED, aria2 temporarily increases the
number of peers to try for more download speed. Configuring this option with your preferred download
speed can increase your download speed in some cases. You can append K or M(1K = 1024, 1M = 1024K).
Default: 50K
|
--bt-save-metadata[=true|false]
Save metadata as .torrent file. This option has effect only when BitTorrent Magnet URI is used. The
filename is hex encoded info hash with suffix .torrent. The directory to be saved is the same
directory where download file is saved. If the same file already exists, metadata is not saved. See
also --bt-metadata-only option. Default: false
|
--bt-seed-unverified[=true|false]
Seed previously downloaded files without verifying piece hashes. Default: false
|
--bt-stop-timeout=SEC
Stop BitTorrent download if download speed is 0 in consecutive SEC seconds. If 0 is given, this
feature is disabled. Default: 0
|
--bt-tracker-connect-timeout=SEC
Set the connect timeout in seconds to establish connection to tracker. After the connection is
established, this option makes no effect and --bt-tracker-timeout option is used instead. Default: 60
|
--bt-tracker-interval=SEC
Set the interval in seconds between tracker requests. This completely overrides interval value and
aria2 just uses this value and ignores the min interval and interval value in the response of
tracker. If 0 is set, aria2 determines interval based on the response of tracker and the download
progress. Default: 0
|
--bt-tracker-timeout=SEC
Set timeout in seconds. Default: 60
|
--dht-file-path=PATH
Change the IPv4 DHT routing table file to PATH. Default: $HOME/.aria2/dht.dat
|
--dht-file-path6=PATH
Change the IPv6 DHT routing table file to PATH. Default: $HOME/.aria2/dht6.dat
|
--dht-listen-addr6=ADDR
Specify address to bind socket for IPv6 DHT. It should be a global unicast IPv6 address of the host.
|
--dht-message-timeout=SEC
Set timeout in seconds. Default: 10
|
--enable-dht[=true|false]
Enable IPv4 DHT functionality. If a private flag is set in a torrent, aria2 doesn’t use DHT for that
download even if true is given. Default: true
|
--enable-dht6[=true|false]
Enable IPv6 DHT functionality. If a private flag is set in a torrent, aria2 doesn’t use DHT for that
download even if true is given. Use --dht-listen-port option to specify port number to listen on. See
also --dht-listen-addr6 option.
|
--enable-peer-exchange[=true|false]
Enable Peer Exchange extension. If a private flag is set in a torrent, this feature is disabled for
that download even if true is given. Default: true
|
--follow-torrent=true|false|mem
If true or mem is specified, when a file whose suffix is ".torrent" or content type is
"application/x-bittorrent" is downloaded, aria2 parses it as a torrent file and downloads files
mentioned in it. If mem is specified, a torrent file is not written to the disk, but is just kept in
memory. If false is specified, the action mentioned above is not taken. Default: true
|
-O, --index-out=INDEX=PATH
Set file path for file with index=INDEX. You can find the file index using the --show-files option.
PATH is a relative path to the path specified in --dir option. You can use this option multiple
times. Using this option, you can specify the output filenames of BitTorrent downloads.
|
--max-overall-upload-limit=SPEED
Set max overall upload speed in bytes/sec. 0 means unrestricted. You can append K or M(1K = 1024, 1M
= 1024K). To limit the upload speed per torrent, use --max-upload-limit option. Default: 0
|
-u, --max-upload-limit=SPEED
Set max upload speed per each torrent in bytes/sec. 0 means unrestricted. You can append K or M(1K =
1024, 1M = 1024K). To limit the overall upload speed, use --max-overall-upload-limit option. Default:
0
|
--seed-ratio=RATIO
Specify share ratio. Seed completed torrents until share ratio reaches RATIO. You are strongly
encouraged to specify equals or more than 1.0 here. Specify 0.0 if you intend to do seeding
regardless of share ratio. If --seed-time option is specified along with this option, seeding ends
when at least one of the conditions is satisfied. Default: 1.0
|
--seed-time=MINUTES
Specify seeding time in minutes. Also see the --seed-ratio option.
Note
Specifying --seed-time=0 disables seeding after download completed.
|
-T, --torrent-file=TORRENT_FILE
The path to the .torrent file. You are not required to use this option because you can specify
.torrent files without -T.
Metalink Specific Options
--follow-metalink=true|false|mem
If true or mem is specified, when a file whose suffix is ".meta4" or ".metalink" or content type of
"application/metalink4+xml" or "application/metalink+xml" is downloaded, aria2 parses it as a
metalink file and downloads files mentioned in it. If mem is specified, a metalink file is not
written to the disk, but is just kept in memory. If false is specified, the action mentioned above is
not taken. Default: true
|
--metalink-base-uri=URI
Specify base URI to resolve relative URI in metalink:url and metalink:metaurl element in a metalink
file stored in local disk. If URI points to a directory, URI must end with /.
|
-M, --metalink-file=METALINK_FILE
The file path to .meta4 and .metalink file. Reads input from stdin when - is specified. You are not
required to use this option because you can specify .metalink files without -M.
|
-C, --metalink-servers=NUM_SERVERS
The number of servers to connect to simultaneously. Some Metalinks regulate the number of servers to
connect. aria2 strictly respects them. This means that if Metalink defines the maxconnections
attribute lower than NUM_SERVERS, then aria2 uses the value of maxconnections attribute instead of
NUM_SERVERS. See also -s and -j options. Default: 5
|
--metalink-language=LANGUAGE
The language of the file to download.
|
--metalink-os=OS
The operating system of the file to download.
|
--metalink-version=VERSION
The version of the file to download.
|
--metalink-preferred-protocol=PROTO
Specify preferred protocol. The possible values are http, https, ftp and none. Specify none to
disable this feature. Default: none
|
--metalink-enable-unique-protocol[=true|false]
If true is given and several protocols are available for a mirror in a metalink file, aria2 uses one
of them. Use --metalink-preferred-protocol option to specify the preference of protocol. Default:
true
RPC Options
--enable-rpc[=true|false]
Enable JSON-RPC/XML-RPC server. It is strongly recommended to set username and password using
--rpc-user and --rpc-passwd option. See also --rpc-listen-port option. Default: false
|
--pause[=true|false]
Pause download after added. This option is effective only when --enable-rpc=true is given. Default:
false
|
--rpc-allow-origin-all[=true|false]
Add Access-Control-Allow-Origin header field with value * to the RPC response. Default: false
|
--rpc-listen-all[=true|false]
Listen incoming JSON-RPC/XML-RPC requests on all network interfaces. If false is given, listen only
on local loopback interface. Default: false
|
--rpc-listen-port=PORT
Specify a port number for JSON-RPC/XML-RPC server to listen to. Possible Values: 1024-65535 Default:
6800
|
--rpc-max-request-size=SIZE
Set max size of JSON-RPC/XML-RPC request. If aria2 detects the request is more than SIZE bytes, it
drops connection. Default: 2M
|
--rpc-passwd=PASSWD
Set JSON-RPC/XML-RPC password.
|
--rpc-user=USER
Set JSON-RPC/XML-RPC user.
Advanced Options
--allow-overwrite[=true|false]
Restart download from scratch if the corresponding control file doesn’t exist. See also
--auto-file-renaming option. Default: false
|
--allow-piece-length-change[=true|false]
If false is given, aria2 aborts download when a piece length is different from one in a control file.
If true is given, you can proceed but some download progress will be lost. Default: false
|
--always-resume[=true|false]
Always resume download. If true is given, aria2 always tries to resume download and if resume is not
possible, aborts download. If false is given, when all given URIs do not support resume or aria2
encounters N URIs which does not support resume (N is the value specified using
--max-resume-failure-tries option), aria2 downloads file from scratch. See --max-resume-failure-tries
option. Default: true
|
--async-dns[=true|false]
Enable asynchronous DNS. Default: true
|
--auto-file-renaming[=true|false]
Rename file name if the same file already exists. This option works only in HTTP(S)/FTP download. The
new file name has a dot and a number(1..9999) appended. Default: true
|
--auto-save-interval=SEC
Save a control file(*.aria2) every SEC seconds. If 0 is given, a control file is not saved during
download. aria2 saves a control file when it stops regardless of the value. The possible values are
between 0 to 600. Default: 60
|
--conditional-get[=true|false]
Download file only when the local file is older than remote file. This function only works with
HTTP(S) downloads only. It does not work if file size is specified in Metalink. It also ignores
Content-Disposition header. If a control file exists, this option will be ignored. This function uses
If-Modified-Since header to get only newer file conditionally. When getting modification time of
local file, it uses user supplied filename(see --out option) or filename part in URI if --out is not
specified. To overwrite existing file, --allow-overwrite is required. Default: false
|
--conf-path=PATH
Change the configuration file path to PATH. Default: $HOME/.aria2/aria2.conf
|
-D, --daemon[=true|false]
Run as daemon. The current working directory will be changed to / and standard input, standard output
and standard error will be redirected to /dev/null. Default: false
|
--disable-ipv6[=true|false]
Disable IPv6. This is useful if you have to use broken DNS and want to avoid terribly slow AAAA
record lookup. Default: false
|
--download-result=OPT
This option changes the way "Download Results" is formatted. If OPT is default, print GID, status,
average download speed and path/URI. If multiple files are involved, path/URI of first requested file
is printed and remaining ones are omitted. If OPT is full, print GID, status, average download speed,
percentage of progress and path/URI. The percentage of progress and path/URI are printed for each
requested file in each row. Default: default
|
--enable-async-dns6[=true|false]
Enable IPv6 name resolution in asynchronous DNS resolver. This option will be ignored when
--async-dns=false. Default: false
|
--event-poll=POLL
Specify the method for polling events. The possible values are epoll, kqueue, port, poll and select.
For each epoll, kqueue, port and poll, it is available if system supports it. epoll is available on
recent Linux. kqueue is available on various *BSD systems including Mac OS X. port is available on
Open Solaris. The default value may vary depending on the system you use.
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--file-allocation=METHOD
Specify file allocation method. 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. If you are
using newer file systems such as ext4 (with extents support), btrfs, xfs or NTFS(MinGW build only),
falloc is your best choice. It allocates large(few GiB) files almost instantly. Don’t use falloc with
legacy file systems such as ext3 and FAT32 because it takes almost same time as prealloc and it
blocks aria2 entirely until allocation finishes. falloc may not be available if your system doesn’t
have posix_fallocate() function. Possible Values: none, prealloc, falloc Default: prealloc
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--hash-check-only[=true|false]
If true is given, after hash check using --check-integrity option, abort download whether or not
download is complete. Default: false
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--human-readable[=true|false]
Print sizes and speed in human readable format (e.g., 1.2Ki, 3.4Mi) in the console readout. Default:
true
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--interface=INTERFACE
Bind sockets to given interface. You can specify interface name, IP address and hostname. Possible
Values: interface, IP address, hostname
Note
If an interface has multiple addresses, it is highly recommended to specify IP address explicitly.
See also --disable-ipv6. If your system doesn’t have getifaddrs(), this option doesn’t accept
interface name.
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--max-download-result=NUM
Set maximum number of download result kept in memory. The download results are
completed/error/removed downloads. The download results are stored in FIFO queue and it can store at
most NUM download results. When queue is full and new download result is created, oldest download
result is removed from the front of the queue and new one is pushed to the back. Setting big number
in this option may result high memory consumption after thousands of downloads. Specifying 0 means no
download result is kept. Default: 1000
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--max-resume-failure-tries=N
When used with --always-resume=false, aria2 downloads file from scratch when aria2 detects N number
of URIs that does not support resume. If N is 0, aria2 downloads file from scratch when all given
URIs do not support resume. See --always-resume option. Default: 0
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--log-level=LEVEL
Set log level to output. LEVEL is either debug, info, notice, warn or error. Default: debug
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--on-bt-download-complete=COMMAND
For BitTorrent, a command specified in --on-download-complete is called after download completed and
seeding is over. On the other hand, this option set the command to be executed after download
completed but before seeding. See Event Hook for more details about COMMAND. Possible Values:
/path/to/command
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--on-download-complete=COMMAND
Set the command to be executed after download completed. See See Event Hook for more details about
COMMAND. See also --on-download-stop option. Possible Values: /path/to/command
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--on-download-error=COMMAND
Set the command to be executed after download aborted due to error. See Event Hook for more details
about COMMAND. See also --on-download-stop option. Possible Values: /path/to/command
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--on-download-pause=COMMAND
Set the command to be executed after download was paused. See Event Hook for more details about
COMMAND. Possible Values: /path/to/command
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--on-download-start=COMMAND
Set the command to be executed after download got started. See Event Hook for more details about
COMMAND. Possible Values: /path/to/command
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--on-download-stop=COMMAND
Set the command to be executed after download stopped. You can override the command to be executed
for particular download result using --on-download-complete and --on-download-error. If they are
specified, command specified in this option is not executed. See Event Hook for more details about
COMMAND. Possible Values: /path/to/command
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--piece-length=LENGTH
Set a piece length for HTTP/FTP downloads. This is the boundary when aria2 splits a file. All splits
occur at multiple of this length. This option will be ignored in BitTorrent downloads. It will be
also ignored if Metalink file contains piece hashes. Default: 1M
Note
The possible usecase of --piece-length option is change the request range in one HTTP pipelined
request. To enable HTTP pipelining use --enable-http-pipelining.
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--show-console-readout[=true|false]
Show console readout. Default: true
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--summary-interval=SEC
Set interval in seconds to output download progress summary. Setting 0 suppresses the output.
Default: 60
Note
In multi file torrent downloads, the files adjacent forward to the specified files are also allocated
if they share the same piece.
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-Z, --force-sequential[=true|false]
Fetch URIs in the command-line sequentially and download each URI in a separate session, like the
usual command-line download utilities. Default: false
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--max-overall-download-limit=SPEED
Set max overall download speed in bytes/sec. 0 means unrestricted. You can append K or M(1K = 1024,
1M = 1024K). To limit the download speed per download, use --max-download-limit option. Default: 0
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--max-download-limit=SPEED
Set max download speed per each download in bytes/sec. 0 means unrestricted. You can append K or
M(1K = 1024, 1M = 1024K). To limit the overall download speed, use --max-overall-download-limit
option. Default: 0
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--no-conf[=true|false]
Disable loading aria2.conf file.
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--no-file-allocation-limit=SIZE
No file allocation is made for files whose size is smaller than SIZE. You can append K or M(1K =
1024, 1M = 1024K). Default: 5M
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-P, --parameterized-uri[=true|false]
Enable parameterized URI support. You can specify set of parts: http://{sv1,sv2,sv3}/foo.iso. Also
you can specify numeric sequences with step counter: http://host/image[000-100:2].img. A step counter
can be omitted. If all URIs do not point to the same file, such as the second example above, -Z
option is required. Default: false
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-q, --quiet[=true|false]
Make aria2 quiet (no console output). Default: false
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--realtime-chunk-checksum[=true|false]
Validate chunk of data by calculating checksum while downloading a file if chunk checksums are
provided. Default: true
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--remove-control-file[=true|false]
Remove control file before download. Using with --allow-overwrite=true, download always starts from
scratch. This will be useful for users behind proxy server which disables resume.
Note
For Metalink downloads, -C1 is recommended for proxy server which disables resume, in order to avoid
establishing unnecessary connections.
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--save-session=FILE
Save error/unfinished downloads to FILE on exit. You can pass this output file to aria2c with -i
option on restart. Please note that downloads added by aria2.addTorrent and aria2.addMetalink RPC
method and whose metadata could not be saved as a file are not saved. Downloads removed using
aria2.remove and aria2.forceRemove will not be saved.
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--stop=SEC
Stop application after SEC seconds has passed. If 0 is given, this feature is disabled. Default: 0
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--truncate-console-readout[=true|false]
Truncate console readout to fit in a single line. Default: true
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-v, --version
Print the version number, copyright and the configuration information and exit.
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