Provided by: bittornado_0.3.18-10.3_all 
NAME
bittorrent-downloader — download files using a scatter-gather network
SYNOPSIS
btdownloadheadless [options ...] URL
btdownloadheadless [options ...] filename
btdownloadcurses [options ...] URL
btdownloadcurses [options ...] filename
btdownloadgui [options ...] URL
btdownloadgui [options ...] filename
btlaunchmany [options ...] directory
btlaunchmanycurses [options ...] directory
DESCRIPTION
This manual page documents briefly the options available to the bittorrent-downloader
commands.
This manual page was written for the Debian distribution because the original program does
not have a manual page.
btdownloadheadless, btdownloadcurses, btdownloadgui, btlaunchmany, and btlaunchmanycurses
are all programs that allow a user to download files using bittorrent, a peer to peer,
scatter-gather network protocol. They all share a common set of options, shown below. For
more information on how to run them, and their program-specific options, see their
individual man pages.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with
two dashes (`--'). A summary of options is included below.
--max_uploads number
the maximum number of uploads to allow at once (defaults to 7)
--keepalive_interval seconds
the number of seconds to pause between sending keepalives (defaults to 120.0)
--download_slice_size bytes
the number of bytes to query for per request (defaults to 16384)
--upload_unit_size bytes
when limiting the upload rate, the number of bytes to send at a time (defaults
to 1460)
--request_backlog number
the maximum number of requests to keep in a single pipe at once (defaults to 10)
--max_message_length length
the maximum length prefix encoding you'll accept over the wire. Larger values
will get the connection dropped. (defaults to 8388608)
--ip ip the ip to report you have to the tracker (defaults to '')
--minport port
the minimum port to listen on (defaults to 10000)
--maxport port
the maximum port to listen on (defaults to 60000)
--random_port 0|1
whether to choose randomly inside the port range (instead of counting up
linearly from min to max) (defaults to 1)
--responsefile file
the file the server response was stored in, as an alternative to --url. If this
option is used, no filename or URL should be present on the command line.
(defaults to '')
--url URL the URL to get the torrent file from, as an alternative to --responsefile. If
this option is used, no filename or URL should be present on the command line.
(defaults to '')
--crypto_allowed 0|1
whether to allow the client to accept encrypted connections. (defaults to 1 if
python-crypto is installed, 0 otherwise)
--crypto_only 0|1
whether to only create or allow encrypted connections. (defaults to 0)
--crypto_stealth 0|1
whether to prevent all non-encrypted connection attempts; will result in an
effectively firewalled state on older trackers. (defaults to 0)
--selector_enabled 0|1
whether to enable the file selector and fast resume function (defaults to 1)
--expire_cache_data days
the number of days after which you wish to expire old cache data (0 = disabled)
(defaults to 10)
--priority -1|0|1|2[,-1|0|1|2 ...]
a list of file priorities, separated by commas. There must be one per file. 0 =
highest, 1 = normal, 2 = lowest, -1 = download disabled. Order is based on the
file/torrent order as shown by btshowmetainfo. For example, to download only the
third of four files use: --priority -1,-1,2,-1 (defaults to '')
--saveas filename
the local filename to save the file as, null indicates query user (defaults to
'')
--timeout seconds
the number of seconds to wait between closing sockets which nothing has been
received on (defaults to 300.0)
--timeout_check_interval seconds
the number of seconds to wait between checking if any connections have timed out
(defaults to 60.0)
--max_slice_length length
the maximum length slice to send to peers, larger requests are ignored (defaults
to 131072)
--max_rate_period seconds
the maximum number of seconds to use in guessing what the current rate estimate
represents (defaults to 20.0)
--bind ip|hostname[,ip|hostname ...]
a comma-separated list of ips and hostnames to bind to locally (defaults to '')
--ipv6_enabled 0|1
whether to allow the client to connect to peers via IPv6 (defaults to 0)
--ipv6_binds_v4 0|1
set if an IPv6 server socket won't also field IPv4 connections (defaults to 0)
--upload_rate_fudge seconds
the time equivalent in seconds of writing to kernel-level TCP buffer, for rate
adjustment (defaults to 5.0)
--tcp_ack_fudge overhead
how much TCP ACK download overhead to add to upload rate calculations (0 =
disabled) (defaults to 0.029999999999999999)
--display_interval seconds
the number of seconds between updates of displayed information (defaults to 0.5)
--rerequest_interval seconds
the number of seconds between requesting more peers (defaults to 300)
--min_peers number
make tracker requests every --rerequest_interval until this number has been
reached, then switch to the standard longer interval (defaults to 20)
--http_timeout seconds
the number of seconds to wait before assuming that an http connection has timed
out (defaults to 60)
--max_initiate number
the number of peers at which to stop initiating new connections (defaults to 40)
--check_hashes 0|1
whether to check hashes on disk (defaults to 1)
--max_upload_rate kB/s
the maximum kB/s to upload at (0 = no limit, -1 = automatic) (defaults to 0)
--max_download_rate kB/s
the maximum kB/s to download at (0 = no limit) (defaults to 0)
--alloc_type normal|background|pre-allocate|sparse
the allocation type (may be 'normal', 'background', 'pre-allocate' or 'sparse')
(defaults to 'normal')
--alloc_rate MiB/s
the rate (in MiB/s) to allocate space at using background allocation (defaults
to 2.0)
--buffer_reads 0|1
whether to buffer disk reads (defaults to 1)
--write_buffer_size space
the maximum amount of space to use for buffering disk writes (in megabytes, 0 =
disabled) (defaults to 4)
--breakup_seed_bitfield 0|1
whether to send an incomplete bitfield and then 'have' messages, in order to get
around stupid ISP manipulation (defaults to 1)
--snub_time seconds
the number of seconds to wait for data to come in over a connection before
assuming it's semi-permanently choked (defaults to 30.0)
--spew 0|1
whether to display diagnostic info to stdout. This option is not very useful
when using the curses or gui interfaces. (defaults to 0)
--rarest_first_cutoff number
the number of downloads at which to switch from random to rarest first (defaults
to 2)
--rarest_first_priority_cutoff number
the number of peers which need to have a piece before other partials take
priority over rarest first (defaults to 5)
--min_uploads number
the number of uploads to fill out to with extra optimistic unchokes (defaults to
4)
--max_files_open number
the maximum number of files to keep open at a time, 0 means no limit (defaults
to 50)
--round_robin_period seconds
the number of seconds between the client switching upload targets (defaults to
30)
--super_seeder 0|1
whether to use special upload-efficiency-maximizing routines (only for dedicated
seeds) (defaults to 0)
--security 0|1
whether to enable extra security features intended to prevent abuse (defaults to
1)
--max_connections number
the absolute maximum number of peers to connect with (0 = no limit) (defaults to
0)
--auto_kick 0|1
whether to allow the client to automatically kick/ban peers that send bad data
(defaults to 1)
--double_check 0|1
whether to double-check data being written to the disk for errors (may increase
CPU load) (defaults to 1)
--triple_check 0|1
whether to thoroughly check data being written to the disk (may slow disk
access) (defaults to 0)
--lock_files 0|1
whether to lock files the client is working with (defaults to 1)
--lock_while_reading 0|1
whether to lock access to files being read (defaults to 0)
--auto_flush minutes
the number of minutes between automatic flushes to disk (0 = disabled) (defaults
to 0)
--dedicated_seed_id code
the code to send to a tracker, identifying as a dedicated seed (defaults to '')
--save_options 0|1
whether to save the current options as the new default configuration for the
current program (defaults to 0)
SEE ALSO
The single torrent downloaders: btdownloadheadless(1), btdownloadcurses(1),
btdownloadgui(1).
The multiple torrent downloaders: bittorrent-multi-downloader(1), btlaunchmany(1),
btlaunchmanycurses(1).
The bittorrent tracker: bttrack(1).
The torrent file creators: btmakemetafile(1), btmaketorrentgui(1), btcompletedir(1),
btcompletedirgui(1).
The torrent file modifiers: btcopyannounce(1), btreannounce(1), btrename(1),
btsethttpseeds(1).
The torrent file displayer: btshowmetainfo(1).
AUTHOR
This manual page was written by Cameron Dale <camrdale@gmail.com> (based on the original
man pages written by Micah Anderson <micah@debian.org>) for the Debian system (but may be
used by others). Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU General Public License, Version 2 or any later version
published by the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in
/usr/share/common-licenses/GPL.
bittorrent-downloader.bittornado(1)