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aria2-rust-pro/docs/compatibility/goldens/cli/upstream/help-all.txt
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Usage: aria2c [OPTIONS] [URI | MAGNET | TORRENT_FILE | METALINK_FILE]...
Printing all options.
Options:
-v, --version Print the version number and exit.
Tags: #basic
-h, --help[=TAG|KEYWORD] Print usage and exit.
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.
Possible Values: #basic, #advanced, #http, #https, #ftp, #metalink, #bittorrent, #cookie, #hook, #file, #rpc, #checksum, #experimental, #deprecated, #help, #all
Default: #basic
Tags: #basic, #help
-t, --timeout=SEC Set timeout in seconds.
Possible Values: 1-600
Default: 60
Tags: #http, #ftp
--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.
Possible Values: 1-600
Default: 60
Tags: #http, #ftp
-m, --max-tries=N Set number of tries. 0 means unlimited.
Possible Values: 0-*
Default: 5
Tags: #http, #ftp
--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.
Possible Values: 0-600
Default: 60
Tags: #advanced
-l, --log=LOG The file name of the log file. If '-' is
specified, log is written to stdout.
Possible Values: /path/to/file, -
Tags: #basic
-d, --dir=DIR The directory to store the downloaded file.
Possible Values: /path/to/directory
Default: C:\workspace\aria2-rust-pro
Tags: #basic, #file
-o, --out=FILE The file name of the downloaded file. It is
always relative to the directory given in -d
option. When the -Z option is used, this option
will be ignored.
Possible Values: /path/to/file
Tags: #basic, #http, #ftp, #file
-s, --split=N Download a file using N connections. If more
than N URIs are given, first N URIs are used and
remaining URLs are used for backup. If less than
N URIs are given, those URLs are used more than
once so that N connections total are made
simultaneously. The number of connections to the
same host is restricted by the
--max-connection-per-server option. See also the
--min-split-size option.
Possible Values: 1-*
Default: 5
Tags: #basic, #http, #ftp
-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".
Possible Values: true, false
Default: false
Tags: #advanced
--referer=REFERER Set an http referrrer (Referer). This affects
all http/https downloads. If "*" is given,
the download URI is also used as the referrer.
This may be useful when used together with
the -P option.
Tags: #http
--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.
Possible Values: 0-*
Default: 0
Tags: #http, #ftp
--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.
Possible Values: 1048576-1073741824
Default: 1M
Tags: #advanced, #http, #ftp
--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.
Possible Values: 0-*
Default: 0
Tags: #http, #ftp, #bittorrent
--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.
Possible Values: 0-*
Default: 0
Tags: #http, #ftp, #bittorrent
--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 the 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.
'trunc' uses ftruncate() system call or
platform-specific counterpart to truncate a file
to a specified length.
Possible Values: none, prealloc, trunc, falloc
Default: prealloc
Tags: #basic, #file
--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).
Possible Values: 0-*
Default: 5M
Tags: #advanced, #file
--allow-overwrite[=true|false] Restart download from scratch if the
corresponding control file doesn't exist. See
also --auto-file-renaming option.
Possible Values: true, false
Default: false
Tags: #advanced, #file
--realtime-chunk-checksum[=true|false] Validate chunk of data by calculating
checksum while downloading a file if chunk
checksums are provided.
Possible Values: true, false
Default: true
Tags: #metalink, #checksum
-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.
Possible Values: true, false
Default: false
Tags: #basic, #metalink, #bittorrent, #file, #checksum
--netrc-path=FILE Specify the path to the netrc file.
Possible Values: /path/to/file
Default: C:/Users/<user>/.netrc
Tags:
-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.
Possible Values: true, false
Default: false
Tags: #basic, #http, #ftp
-n, --no-netrc[=true|false] Disables netrc support.
Possible Values: true, false
Default: false
Tags: #http, #ftp
-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 section of man page
for details. See also --deferred-input option.
Possible Values: /path/to/file, -
Tags: #basic
--deferred-input[=true|false] If true is given, aria2 does not read all URIs
and options from file specified by -i option at
startup, but it reads one by one when it needs
later. This may reduce memory usage if input
file contains a lot of URIs to download.
If false is given, aria2 reads all URIs and
options at startup.
Possible Values: true, false
Default: false
Tags: #advanced
-j, --max-concurrent-downloads=N Set maximum number of parallel downloads for
every static (HTTP/FTP) URL, torrent and metalink.
See also --split and --optimize-concurrent-downloads options.
Possible Values: 1-*
Default: 5
Tags: #basic
--optimize-concurrent-downloads[=true|false|A:B] Optimizes the number of
concurrent downloads according to the bandwidth
available. aria2 uses the download speed observed
in the previous downloads to adapt the number of
downloads launched in parallel according to the
rule N = A + B Log10(speed in Mbps). The
coefficients A and B can be customized in the
option arguments with A and B separated by a
colon. The default values (A=5,B=25) lead to
using typically 5 parallel downloads on 1Mbps
networks and above 50 on 100Mbps networks. The
number of parallel downloads remains constrained
under the maximum defined by the
max-concurrent-downloads parameter.
Possible Values: true, false, A:B
Default: false
Tags: #advanced
-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.
Possible Values: true, false
Default: false
Tags: #basic
--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 after the name, but before the file
extension, if any.
Possible Values: true, false
Default: true
Tags: #advanced, #file
-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.
Possible Values: true, false
Default: false
Tags: #advanced
--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.
Possible Values: true, false
Default: false
Tags: #advanced
--no-conf[=true|false] Disable loading aria2.conf file.
Possible Values: true, false
Default: false
Tags: #advanced
--conf-path=PATH Change the configuration file path to PATH.
Possible Values: /path/to/file
Default: C:/Users/<user>/.config/aria2/aria2.conf
Tags: #advanced
--stop=SEC Stop application after SEC seconds has passed.
If 0 is given, this feature is disabled.
Possible Values: 0-2147483647
Default: 0
Tags: #advanced
-q, --quiet[=true|false] Make aria2 quiet(no console output).
Possible Values: true, false
Default: false
Tags: #advanced
--async-dns[=true|false] Enable asynchronous DNS.
Possible Values: true, false
Default: true
Tags: #advanced
--summary-interval=SEC Set interval to output download progress summary.
Setting 0 suppresses the output.
Possible Values: 0-2147483647
Default: 60
Tags: #advanced
--log-level=LEVEL Set log level to output to file specified using
--log option.
Possible Values: debug, info, notice, warn, error
Default: debug
Tags: #advanced
--console-log-level=LEVEL Set log level to output to console.
Possible Values: debug, info, notice, warn, error
Default: notice
Tags: #advanced
--uri-selector=SELECTOR Specify URI selection algorithm.
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.
Possible Values: inorder, feedback, adaptive
Default: feedback
Tags: #http, #ftp
--server-stat-timeout=SEC Specifies timeout in seconds to invalidate
performance profile of the servers since the last
contact to them.
Possible Values: 0-2147483647
Default: 86400
Tags: #http, #ftp
--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
Possible Values: /path/to/file
Tags: #http, #ftp
--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.
Possible Values: /path/to/file
Tags: #http, #ftp
-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.
Possible Values: true, false
Default: false
Tags: #http, #ftp
--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. The number of retry attempt is
counted toward --max-tries, so it should be
configured too.
Possible Values: 0-*
Default: 0
Tags: #http, #ftp
--event-poll=POLL Specify the method for polling events.
Possible Values: select
Default: select
Tags: #advanced
--enable-rpc[=true|false] Enable JSON-RPC/XML-RPC server.
It is strongly recommended to set secret
authorization token using --rpc-secret option.
See also --rpc-listen-port option.
Possible Values: true, false
Default: false
Tags: #rpc
--rpc-listen-port=PORT Specify a port number for JSON-RPC/XML-RPC server
to listen to.
Possible Values: 1024-65535
Default: 6800
Tags: #rpc
--rpc-user=USER Set JSON-RPC/XML-RPC user. This option will be
deprecated in the future release. Migrate to
--rpc-secret option as soon as possible.
Tags: #rpc, #deprecated
--rpc-passwd=PASSWD Set JSON-RPC/XML-RPC password. This option will
be deprecated in the future release. Migrate to
--rpc-secret option as soon as possible.
Tags: #rpc, #deprecated
--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.
Possible Values: 0-*
Default: 2M
Tags: #rpc
--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.
Possible Values: true, false
Default: false
Tags: #rpc
--rpc-allow-origin-all[=true|false] Add Access-Control-Allow-Origin header
field with value '*' to the RPC response.
Possible Values: true, false
Default: false
Tags: #rpc
--rpc-certificate=FILE Use the certificate in FILE for RPC server.
The certificate must be in PEM format.
Use --rpc-private-key option to specify the
private key. Use --rpc-secure option to enable
encryption.
Possible Values: /path/to/file
Tags: #rpc
--rpc-private-key=FILE Use the private key in FILE for RPC server.
The private key must be decrypted and in PEM
format. Use --rpc-secure option to enable
encryption. See also --rpc-certificate option.
Possible Values: /path/to/file
Tags: #rpc
--rpc-secure[=true|false] RPC transport will be encrypted by SSL/TLS.
The RPC clients must use https scheme to access
the server. For WebSocket client, use wss
scheme. Use --rpc-certificate and
--rpc-private-key options to specify the
server certificate and private key.
Possible Values: true, false
Default: false
Tags: #rpc
--rpc-save-upload-metadata[=true|false] Save the uploaded torrent or
metalink metadata in the directory specified
by --dir option. The filename consists of
SHA-1 hash hex string of metadata plus
extension. For torrent, the extension is
'.torrent'. For metalink, it is '.meta4'.
If false is given to this option, the
downloads added by aria2.addTorrent or
aria2.addMetalink will not be saved by
--save-session option.
Possible Values: true, false
Default: true
Tags: #rpc
--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.
Possible Values: true, false
Default: false
Tags: #http, #ftp
--reuse-uri[=true|false] Reuse already used URIs if no unused URIs are
left.
Possible Values: true, false
Default: true
Tags: #http, #ftp
--on-download-start=COMMAND Set the command to be executed after download
got started. aria2 passes 3 arguments to COMMAND:
GID, the number of files and file path. See Event
Hook in man page for more details.
Possible Values: /path/to/command
Tags: #advanced, #hook
--on-download-pause=COMMAND Set the command to be executed after download
was paused.
See --on-download-start option for the
requirement of COMMAND.
Possible Values: /path/to/command
Tags: #advanced, #hook
--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 --on-download-start option for the
requirement of COMMAND.
Possible Values: /path/to/command
Tags: #advanced, #hook
--on-download-complete=COMMAND Set the command to be executed after download
completed.
See --on-download-start option for the
requirement of COMMAND.
See also --on-download-stop option.
Possible Values: /path/to/command
Tags: #advanced, #hook
--on-download-error=COMMAND Set the command to be executed after download
aborted due to error.
See --on-download-start option for the
requirement of COMMAND.
See also --on-download-stop option.
Possible Values: /path/to/command
Tags: #advanced, #hook
--interface=INTERFACE Bind sockets to given interface. You can specify
interface name, IP address and hostname.
Possible Values: interface, IP address, hostname
Tags: #advanced
--multiple-interface=INTERFACES Comma separated list of interfaces to bind
sockets to. Requests will be split among the
interfaces to achieve link aggregation. You can
specify interface name, IP address and hostname.
If --interface is used, this option will be
ignored.
Possible Values: interface, IP address, hostname
Tags: #advanced
--disable-ipv6[=true|false] Disable IPv6.
Possible Values: true, false
Default: false
Tags: #advanced
--human-readable[=true|false] Print sizes and speed in human readable format
(e.g., 1.2Ki, 3.4Mi) in the console readout.
Possible Values: true, false
Default: true
Tags: #advanced
--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.
Possible Values: true, false
Default: false
Tags: #advanced
--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.
Possible Values: true, false
Default: true
Tags: #advanced, #http, #ftp
--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.
Possible Values: 0-*
Default: 0
Tags: #advanced, #http, #ftp
--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 will not be saved. Downloads removed
using aria2.remove and aria2.forceRemove will not
be saved.
Possible Values: /path/to/file
Tags: #advanced
-x, --max-connection-per-server=NUM The maximum number of connections to one
server for each download.
Possible Values: 1-16
Default: 1
Tags: #basic, #http, #ftp
-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: 1048576-1073741824
Default: 20M
Tags: #basic, #http, #ftp
--conditional-get[=true|false] Download file only when the local file is older
than remote file. Currently, this function has
many limitations. See man page for details.
Possible Values: true, false
Default: false
Tags: #advanced, #http
--enable-async-dns6[=true|false] Enable IPv6 name resolution in asynchronous
DNS resolver. This option will be ignored when
--async-dns=false.
Possible Values: true, false
Tags: #advanced, #deprecated
--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. Note that unfinished
downloads are kept in memory regardless of this
option value. See
--keep-unfinished-download-result option.
Possible Values: 0-*
Default: 1000
Tags: #advanced
--retry-wait=SEC Set the seconds to wait between retries.
With SEC > 0, aria2 will retry download when the
HTTP server returns 503 response.
Possible Values: 0-600
Default: 0
Tags: #http, #ftp
--async-dns-server=IPADDRESS[,...] Comma separated list of DNS server address
used in asynchronous DNS resolver. Usually
asynchronous DNS resolver reads DNS server
addresses from /etc/resolv.conf. When this option
is used, it uses DNS servers specified in this
option instead of ones in /etc/resolv.conf. You
can specify both IPv4 and IPv6 address. This
option is useful when the system does not have
/etc/resolv.conf and user does not have the
permission to create it.
Tags: #advanced
--show-console-readout[=true|false] Show console readout.
Possible Values: true, false
Default: true
Tags: #advanced
--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 'random' is given, aria2 selects piece
randomly. Like 'inorder', --min-split-size
option is honored.
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.
Possible Values: default, inorder, random, geom
Default: default
Tags: #http, #ftp
--truncate-console-readout[=true|false] Truncate console readout to fit in
a single line.
Possible Values: true, false
Default: true
Tags: #advanced
--pause[=true|false] Pause download after added. This option is
effective only when --enable-rpc=true is given.
Possible Values: true, false
Default: false
Tags: #advanced, #rpc
--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.
If OPT is 'hide', "Download Results" is hidden.
Possible Values: default, full, hide
Default: default
Tags: #advanced
--hash-check-only[=true|false] If true is given, after hash check using
--check-integrity option, abort download whether
or not download is complete.
Possible Values: true, false
Default: false
Tags: #advanced, #metalink, #bittorrent, #file, #checksum
--checksum=TYPE=DIGEST Set checksum. TYPE is hash type. The supported
hash type is listed in "Hash Algorithms" in
"aria2c -v". DIGEST is hex digest.
For example, setting sha-1 digest looks like
this:
sha-1=0192ba11326fe2298c8cb4de616f4d4140213838
This option applies only to HTTP(S)/FTP
downloads.
Possible Values: HASH_TYPE=HEX_DIGEST
Tags: #http, #ftp, #checksum
--stop-with-process=PID Stop application when process PID is not running.
This is useful if aria2 process is forked from a
parent process. The parent process can fork aria2
with its own pid and when parent process exits
for some reason, aria2 can detect it and shutdown
itself.
Possible Values: 0-*
Tags: #advanced
--enable-mmap[=true|false] Map files into memory.
Possible Values: true, false
Default: false
Tags: #advanced, #experimental
--force-save[=true|false] Save download with --save-session option even
if the download is completed or removed. This
option also saves control file in that
situations. This may be useful to save
BitTorrent seeding which is recognized as
completed state.
Possible Values: true, false
Default: false
Tags: #advanced
--save-not-found[=true|false] Save download with --save-session option even
if the file was not found on the server. This
option also saves control file in that
situations.
Possible Values: true, false
Default: true
Tags: #advanced
--disk-cache=SIZE Enable disk cache. If SIZE is 0, the disk cache
is disabled. This feature caches the downloaded
data in memory, which grows to at most SIZE
bytes. The cache storage is created for aria2
instance and shared by all downloads. The one
advantage of the disk cache is reduce the disk
I/O because the data are written in larger unit
and it is reordered by the offset of the file.
If hash checking is involved and the data are
cached in memory, we don't need to read them
from the disk.
SIZE can include K or M(1K = 1024, 1M = 1024K).
Possible Values: 0-*
Default: 16M
Tags: #advanced
--gid=GID Set GID manually. aria2 identifies each
download by the ID called GID. The GID must be
hex string of 16 characters, thus [0-9a-fA-F]
are allowed and leading zeros must not be
stripped. The GID all 0 is reserved and must
not be used. The GID must be unique, otherwise
error is reported and the download is not added.
This option is useful when restoring the
sessions saved using --save-session option. If
this option is not used, new GID is generated
by aria2.
Tags: #advanced
--save-session-interval=SEC Save error/unfinished downloads to a file
specified by --save-session option every SEC
seconds. If 0 is given, file will be saved only
when aria2 exits.
Possible Values: 0-*
Default: 0
Tags: #advanced
--enable-color[=true|false] Enable color output for a terminal.
Possible Values: true, false
Default: true
Tags: #advanced
--rpc-secret=TOKEN Set RPC secret authorization token.
Tags: #rpc
--dscp=DSCP Set DSCP value in outgoing IP packets of
BitTorrent traffic for QoS. This parameter sets
only DSCP bits in TOS field of IP packets,
not the whole field. If you take values
from /usr/include/netinet/ip.h divide them by 4
(otherwise values would be incorrect, e.g. your
CS1 class would turn into CS4). If you take
commonly used values from RFC, network vendors'
documentation, Wikipedia or any other source,
use them as they are.
Possible Values: 0-*
Default: 0
Tags: #advanced
--pause-metadata[=true|false]
Pause downloads created as a result of metadata
download. There are 3 types of metadata
downloads in aria2: (1) downloading .torrent
file. (2) downloading torrent metadata using
magnet link. (3) downloading metalink file.
These metadata downloads will generate downloads
using their metadata. This option pauses these
subsequent downloads. This option is effective
only when --enable-rpc=true is given.
Possible Values: true, false
Default: false
Tags: #advanced, #rpc
--min-tls-version=VERSION Specify minimum SSL/TLS version to enable.
Possible Values: TLSv1.1, TLSv1.2, TLSv1.3
Default: TLSv1.2
Tags: #advanced
--socket-recv-buffer-size=SIZE
Set the maximum socket receive buffer in bytes.
Specifying 0 will disable this option. This value
will be set to socket file descriptor using
SO_RCVBUF socket option with setsockopt() call.
Possible Values: 0-16777216
Default: 0
Tags: #advanced
--max-mmap-limit=SIZE Set the maximum file size to enable mmap (see
--enable-mmap option). The file size is
determined by the sum of all files contained in
one download. For example, if a download
contains 5 files, then file size is the total
size of those files. If file size is strictly
greater than the size specified in this option,
mmap will be disabled.
Possible Values: 0-*
Default: 9223372036854775807
Tags: #advanced
--stderr[=true|false] Redirect all console output that would be
otherwise printed in stdout to stderr.
Possible Values: true, false
Default: false
Tags: #advanced
--keep-unfinished-download-result[=true|false]
Keep unfinished download results even if doing
so exceeds --max-download-result. This is useful
if all unfinished downloads must be saved in
session file (see --save-session option). Please
keep in mind that there is no upper bound to the
number of unfinished download result to keep. If
that is undesirable, turn this option off.
Possible Values: true, false
Default: true
Tags: #advanced
--ftp-user=USER Set FTP user. This affects all URLs.
Tags: #basic, #ftp
--ftp-passwd=PASSWD Set FTP password. This affects all URLs.
Tags: #basic, #ftp
--ftp-type=TYPE Set FTP transfer type.
Possible Values: binary, ascii
Default: binary
Tags: #ftp
-p, --ftp-pasv[=true|false] Use the passive mode in FTP. If false is given,
the active mode will be used.
Possible Values: true, false
Default: true
Tags: #ftp
--ftp-reuse-connection[=true|false] Reuse connection in FTP.
Possible Values: true, false
Default: true
Tags: #ftp
--ssh-host-key-md=TYPE=DIGEST
Set checksum for SSH host public key. TYPE is
hash type. The supported hash type is sha-1 or
md5. DIGEST is hex digest. For example:
sha-1=b030503d4de4539dc7885e6f0f5e256704edf4c3
This option can be used to validate server's
public key when SFTP is used. If this option is
not set, which is default, no validation takes
place.
Possible Values: HASH_TYPE=HEX_DIGEST
Tags: #ftp
--http-user=USER Set HTTP user. This affects all URLs.
Tags: #basic, #http
--http-passwd=PASSWD Set HTTP password. This affects all URLs.
Tags: #basic, #http
-U, --user-agent=USER_AGENT Set user agent for http(s) downloads.
Default: aria2/1.37.0
Tags: #http
--load-cookies=FILE Load Cookies from FILE using the Firefox3 format
and Mozilla/Firefox(1.x/2.x)/Netscape format.
Possible Values: /path/to/file
Tags: #basic, #http, #cookie
--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
Tags: #http, #cookie
--enable-http-keep-alive[=true|false] Enable HTTP/1.1 persistent connection.
Possible Values: true, false
Default: true
Tags: #http
--enable-http-pipelining[=true|false] Enable HTTP/1.1 pipelining.
Possible Values: true, false
Default: false
Tags: #http
--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
Tags: #http
--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.
Possible Values: /path/to/file
Tags: #http, #https
--private-key=FILE Use the private key in FILE.
The private key must be decrypted and in PEM
format. See also --certificate option.
Possible Values: /path/to/file
Tags: #http, #https
--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.
Possible Values: /path/to/file
Tags: #http, #https
--check-certificate[=true|false] Verify the peer using certificates specified
in --ca-certificate option.
Possible Values: true, false
Default: true
Tags: #http, #https
--use-head[=true|false] Use HEAD method for the first request to the HTTP
server.
Possible Values: true, false
Default: false
Tags: #http
--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.
Possible Values: true, false
Default: false
Tags: #http
--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.
Possible Values: true, false
Default: false
Tags: #http
--http-accept-gzip[=true|false] Send 'Accept-Encoding: deflate, gzip' request
header and inflate response if remote server
responds with 'Content-Encoding: gzip' or
'Content-Encoding: deflate'.
Possible Values: true, false
Default: false
Tags: #http
--content-disposition-default-utf8[=true|false] Handle quoted string in
Content-Disposition header as UTF-8 instead of
ISO-8859-1, for example, the filename parameter,
but not the extended version filename*.
Possible Values: true, false
Default: false
Tags: #advanced, #http
--no-want-digest-header[=true|false] Whether to disable Want-Digest header
when doing requests.
Possible Values: true, false
Default: false
Tags: #http
--http-proxy=PROXY Use a proxy server for HTTP. To override a
previously defined proxy, use "".
See also the --all-proxy option.
This affects all http downloads.
Possible Values: [http://][USER:PASSWORD@]HOST[:PORT]
Tags: #http
--https-proxy=PROXY Use a proxy server for HTTPS. To override a
previously defined proxy, use "".
See also the --all-proxy option.
This affects all https downloads.
Possible Values: [http://][USER:PASSWORD@]HOST[:PORT]
Tags: #http, #https
--ftp-proxy=PROXY Use a proxy server for FTP. To override a
previously defined proxy, use "".
See also the --all-proxy option.
This affects all ftp downloads.
Possible Values: [http://][USER:PASSWORD@]HOST[:PORT]
Tags: #ftp
--all-proxy=PROXY Use a proxy server for all protocols. To override
a previously defined proxy, use "".
You also can override this setting and specify a
proxy server for a particular protocol using the
--http-proxy, --https-proxy and --ftp-proxy
options.
This affects all downloads.
Possible Values: [http://][USER:PASSWORD@]HOST[:PORT]
Tags: #http, #https, #ftp
--no-proxy=DOMAINS Specify comma separated hostnames, domains or
network address with or without CIDR block where
proxy should not be used.
Possible Values: HOSTNAME,DOMAIN,NETWORK/CIDR
Tags: #http, #https, #ftp
--proxy-method=METHOD Set the method to use in proxy request.
Possible Values: get, tunnel
Default: get
Tags: #http, #ftp
--http-proxy-user=USER Set user for --http-proxy.
Tags: #http
--http-proxy-passwd=PASSWD Set password for --http-proxy.
Tags: #http
--https-proxy-user=USER Set user for --https-proxy.
Tags: #http, #https
--https-proxy-passwd=PASSWD Set password for --https-proxy.
Tags: #http, #https
--ftp-proxy-user=USER Set user for --ftp-proxy.
Tags: #ftp
--ftp-proxy-passwd=PASSWD Set password for --ftp-proxy.
Tags: #ftp
--all-proxy-user=USER Set user for --all-proxy.
Tags: #http, #https, #ftp
--all-proxy-passwd=PASSWD Set password for --all-proxy.
Tags: #http, #https, #ftp
-S, --show-files[=true|false] Print file listing of .torrent, .meta4 and
.metalink file and exit. More detailed
information will be listed in case of torrent
file.
Possible Values: true, false
Default: false
Tags: #basic, #metalink, #bittorrent
--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.
Possible Values: 0-*
Default: 0
Tags: #basic, #bittorrent
-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.
Possible Values: 0-*
Default: 0
Tags: #basic, #bittorrent
-T, --torrent-file=TORRENT_FILE The path to the .torrent file.
Possible Values: /path/to/file
Tags: #basic, #bittorrent
--listen-port=PORT... Set TCP port number for BitTorrent downloads.
Multiple ports can be specified by using ',',
for example: "6881,6885". You can also use '-'
to specify a range: "6881-6999". ',' and '-' can
be used together.
Possible Values: 1024-65535
Default: 6881-6999
Tags: #basic, #bittorrent
--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 .torrent file is
downloaded to the disk, but is not parsed as a
torrent and its contents are not downloaded.
Possible Values: true, mem, false
Default: true
Tags: #bittorrent
--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.
When used with the -M option, index may vary
depending on the query(see --metalink-* options).
Possible Values: 1-1048576
Tags: #metalink, #bittorrent
--seed-time=MINUTES Specify seeding time in (fractional) minutes.
Also see the --seed-ratio option.
Possible Values: 0.0-*
Tags: #bittorrent
--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.
Possible Values: 0.0-*
Default: 1.0
Tags: #bittorrent
--peer-id-prefix=PEER_ID_PREFIX Specify the prefix of peer ID. The peer ID 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, random
byte data are added to make its length 20 bytes.
Default: A2-1-37-0-
Tags: #bittorrent
--peer-agent=PEER_AGENT Set client reported during Extended torrent handshakes
Default: aria2/1.37.0
Tags: #bittorrent
--enable-peer-exchange[=true|false] Enable Peer Exchange extension.
Possible Values: true, false
Default: true
Tags: #bittorrent
--enable-dht[=true|false] Enable IPv4 DHT functionality. It also enables
UDP tracker support. If a private flag is set
in a torrent, aria2 doesn't use DHT for that
download even if ``true`` is given.
Possible Values: true, false
Default: true
Tags: #basic, #bittorrent
--dht-listen-port=PORT... Set UDP listening port used by DHT(IPv4, IPv6)
and UDP tracker. Multiple ports can be specified
by using ',', for example: "6881,6885". You can
also use '-' to specify a range: "6881-6999".
',' and '-' can be used together.
Possible Values: 1024-65535
Default: 6881-6999
Tags: #basic, #bittorrent
--dht-entry-point=HOST:PORT Set host and port as an entry point to IPv4 DHT
network.
Possible Values: HOST:PORT
Tags: #bittorrent
--dht-file-path=PATH Change the IPv4 DHT routing table file to PATH.
Possible Values: /path/to/file
Default: C:/Users/<user>/.cache/aria2/dht.dat
Tags: #bittorrent
--enable-dht6[=true|false] Enable IPv6 DHT functionality.
Use --dht-listen-port option to specify port
number to listen on. See also --dht-listen-addr6
option.
Possible Values: true, false
Default: false
Tags: #basic, #bittorrent
--dht-listen-addr6=ADDR Specify address to bind socket for IPv6 DHT.
It should be a global unicast IPv6 address of the
host.
Tags: #basic, #bittorrent
--dht-entry-point6=HOST:PORT Set host and port as an entry point to IPv6 DHT
network.
Possible Values: HOST:PORT
Tags: #bittorrent
--dht-file-path6=PATH Change the IPv6 DHT routing table file to PATH.
Possible Values: /path/to/file
Default: C:/Users/<user>/.cache/aria2/dht6.dat
Tags: #bittorrent
--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.
Possible Values: plain, arc4
Default: plain
Tags: #bittorrent
--bt-require-crypto[=true|false] If true is given, aria2 doesn't accept and
establish connection with legacy BitTorrent
handshake. Thus aria2 always uses Obfuscation
handshake.
Possible Values: true, false
Default: false
Tags: #bittorrent
--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).
Possible Values: 0-*
Default: 50K
Tags: #bittorrent
--bt-max-open-files=NUM Specify maximum number of files to open in
multi-file BitTorrent/Metalink downloads
globally.
Possible Values: 1-*
Default: 100
Tags: #bittorrent
--bt-seed-unverified[=true|false] Seed previously downloaded files without
verifying piece hashes.
Possible Values: true, false
Default: false
Tags: #bittorrent
--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.
Possible Values: true, false
Default: true
Tags: #bittorrent, #checksum
--bt-max-peers=NUM Specify the maximum number of peers per torrent.
0 means unlimited.
See also --bt-request-peer-speed-limit option.
Possible Values: 0-*
Default: 55
Tags: #bittorrent
--bt-external-ip=IPADDRESS Specify the external IP address to use in
BitTorrent download and DHT. It may be sent to
BitTorrent tracker. For DHT, this option should
be set to report that local node is downloading
a particular torrent. This is critical to use
DHT in a private network. Although this function
is named 'external', it can accept any kind of IP
addresses.
Possible Values: a numeric IP address
Tags: #bittorrent
-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.
Possible Values: INDEX=PATH
Tags: #bittorrent
--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.
Possible Values: 0-*
Default: 0
Tags: #bittorrent
--bt-stop-timeout=SEC Stop BitTorrent download if download speed is 0 in
consecutive SEC seconds. If 0 is given, this
feature is disabled.
Possible Values: 0-*
Default: 0
Tags: #bittorrent
--bt-prioritize-piece=head[=SIZE],tail[=SIZE] Try to download first and last
pieces of each file first. This is useful for
previewing files. The argument can contain 2
keywords:head and tail. To include both keywords,
they must be separated by comma. These keywords
can take one parameter, SIZE. For example, if
head=SIZE is specified, pieces in the range of
first SIZE bytes of each file get higher priority.
tail=SIZE means the range of last SIZE bytes of
each file. SIZE can include K or M(1K = 1024, 1M =
1024K). If SIZE is omitted, SIZE=1M is used.
Possible Values: head[=SIZE], tail[=SIZE]
Tags: #bittorrent
--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.
Possible Values: true, false
Default: false
Tags: #bittorrent
--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.
Possible Values: true, false
Default: false
Tags: #bittorrent
--bt-enable-lpd[=true|false] Enable Local Peer Discovery.
Possible Values: true, false
Default: false
Tags: #bittorrent
--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 address
Tags: #bittorrent
--bt-tracker-timeout=SEC Set timeout in seconds.
Possible Values: 1-600
Default: 60
Tags: #bittorrent
--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.
Possible Values: 1-600
Default: 60
Tags: #bittorrent
--dht-message-timeout=SEC Set timeout in seconds.
Possible Values: 1-60
Default: 10
Tags: #bittorrent
--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 sets the command to be executed after
download completed but before seeding.
See --on-download-start option for the
requirement of COMMAND.
Possible Values: /path/to/command
Tags: #advanced, #hook
--bt-tracker=URI[,...] Comma separated list of additional BitTorrent
tracker's announce URI. These URIs are not
affected by --bt-exclude-tracker option because
they are added after URIs in --bt-exclude-tracker
option are removed.
Possible Values: URI,...
Tags: #bittorrent
--bt-exclude-tracker=URI[,...] Comma separated list of BitTorrent tracker's
announce URI to remove. You can use special value
'*' which matches all URIs, thus removes all
announce URIs. When specifying '*' in shell
command-line, don't forget to escape or quote it.
See also --bt-tracker option.
Possible Values: URI,... or *
Tags: #bittorrent
--bt-remove-unselected-file[=true|false] Removes the unselected files when
download is completed in BitTorrent. To
select files, use --select-file option. If
it is not used, all files are assumed to be
selected. Please use this option with care
because it will actually remove files from
your disk.
Possible Values: true, false
Default: false
Tags: #bittorrent
--bt-detach-seed-only[=true|false]
Exclude seed only downloads when counting
concurrent active downloads (See -j option).
This means that if -j3 is given and this option
is turned on and 3 downloads are active and one
of those enters seed mode, then it is excluded
from active download count (thus it becomes 2),
and the next download waiting in queue gets
started. But be aware that seeding item is still
recognized as active download in RPC method.
Possible Values: true, false
Default: false
Tags: #bittorrent
--bt-force-encryption[=true|false]
Requires BitTorrent message payload encryption
with arc4. This is a shorthand of
--bt-require-crypto --bt-min-crypto-level=arc4.
If true is given, deny legacy BitTorrent
handshake and only use Obfuscation handshake and
always encrypt message payload.
Possible Values: true, false
Default: false
Tags: #bittorrent
--bt-enable-hook-after-hash-check[=true|false] Allow hook command invocation
after hash check (see -V option) in BitTorrent
download. By default, when hash check succeeds,
the command given by --on-bt-download-complete
is executed. To disable this action, give false
to this option.
Possible Values: true, false
Default: true
Tags: #bittorrent
--bt-load-saved-metadata[=true|false]
Before getting torrent metadata from DHT when
downloading with magnet link, first try to read
file saved by --bt-save-metadata option. If it is
successful, then skip downloading metadata from
DHT.
Possible Values: true, false
Default: false
Tags: #bittorrent
-M, --metalink-file=METALINK_FILE The file path to the .meta4 and .metalink
file. Reads input from stdin when '-' is
specified.
Possible Values: /path/to/file, -
Tags: #basic, #metalink
--metalink-version=VERSION The version of the file to download.
Tags: #metalink
--metalink-language=LANGUAGE The language of the file to download.
Tags: #metalink
--metalink-os=OS The operating system of the file to download.
Tags: #metalink
--metalink-location=LOCATION[,...] The location of the preferred server.
A comma-delimited list of locations is
acceptable.
Tags: #metalink
--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 .metalink file is
downloaded to the disk, but is not parsed as a
metalink file and its contents are not
downloaded.
Possible Values: true, mem, false
Default: true
Tags: #metalink
--metalink-preferred-protocol=PROTO Specify preferred protocol. Specify 'none'
if you don't have any preferred protocol.
Possible Values: http, https, ftp, none
Default: none
Tags: #metalink
--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.
Possible Values: true, false
Default: true
Tags: #metalink
--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 '/'.
Tags: #metalink
Refer to man page for more information.