.TH BITCOIN-QT "1" "April 2013" "bitcoin-qt 1"
.SH NAME
bitcoin-qt \- peer-to-peer network based digital currency
.SH DESCRIPTION
.SS "Usage:"
.IP
bitcoin\-qt [command\-line options]
.SH OPTIONS
.TP
\-?
This help message
.TP
\fB\-conf=\fR<file>
Specify configuration file (default: dash.conf)
.TP
\fB\-pid=\fR<file>
Specify pid file (default: bitcoind.pid)
.TP
\fB\-gen\fR
Generate coins
.TP
\fB\-gen\fR=\fI0\fR
Don't generate coins
.TP
\fB\-datadir=\fR<dir>
Specify data directory
.TP
\fB\-dbcache=\fR<n>
Set database cache size in megabytes (default: 25)
.TP
\fB\-timeout=\fR<n>
Specify connection timeout in milliseconds (default: 5000)
.TP
\fB\-proxy=\fR<ip:port>
Connect through socks proxy
.TP
\fB\-socks=\fR<n>
Select the version of socks proxy to use (4\-5, default: 5)
.TP
\fB\-tor=\fR<ip:port>
Use proxy to reach tor hidden services (default: same as \fB\-proxy\fR)
.TP
\fB\-dns\fR
Allow DNS lookups for \fB\-addnode\fR, \fB\-seednode\fR and \fB\-connect\fR
.TP
\fB\-port=\fR<port>
Listen for connections on <port> (default: 9999 or testnet: 19999)
.TP
\fB\-maxconnections=\fR<n>
Maintain at most <n> connections to peers (default: 125)
.TP
\fB\-addnode=\fR<ip>
Add a node to connect to and attempt to keep the connection open
.TP
\fB\-connect=\fR<ip>
Connect only to the specified node(s)
.TP
\fB\-seednode=\fR<ip>
Connect to a node to retrieve peer addresses, and disconnect
.TP
\fB\-externalip=\fR<ip>
Specify your own public address
.TP
\fB\-onlynet=\fR<net>
Only connect to nodes in network <net> (IPv4, IPv6 or Tor)
.TP
\fB\-discover\fR
Discover own IP address (default: 1 when listening and no \fB\-externalip\fR)
.TP
\fB\-checkpoints\fR
Only accept block chain matching built\-in checkpoints (default: 1)
.TP
\fB\-listen\fR
Accept connections from outside (default: 1 if no \fB\-proxy\fR or \fB\-connect\fR)
.TP
\fB\-bind=\fR<addr>
Bind to given address and always listen on it. Use [host]:port notation for IPv6
.TP
\fB\-dnsseed\fR
Find peers using DNS lookup (default: 1 unless \fB\-connect\fR)
.TP
\fB\-banscore=\fR<n>
Threshold for disconnecting misbehaving peers (default: 100)
.TP
\fB\-bantime=\fR<n>
Number of seconds to keep misbehaving peers from reconnecting (default: 86400)
.TP
\fB\-maxreceivebuffer=\fR<n>
Maximum per\-connection receive buffer, <n>*1000 bytes (default: 5000)
.TP
\fB\-maxsendbuffer=\fR<n>
Maximum per\-connection send buffer, <n>*1000 bytes (default: 1000)
.TP
\fB\-upnp\fR
Use UPnP to map the listening port (default: 1 when listening)
.TP
\fB\-paytxfee=\fR<amt>
Fee per KB to add to transactions you send
.TP
\fB\-server\fR
Accept command line and JSON\-RPC commands
.TP
\fB\-testnet\fR
Use the test network
.TP
\fB\-debug\fR
Output extra debugging information. Implies all other \fB\-debug\fR* options
.TP
\fB\-debugnet\fR
Output extra network debugging information
.TP
\fB\-logtimestamps\fR
Prepend debug output with timestamp
.TP
\fB\-shrinkdebugfile\fR
Shrink debug.log file on client startup (default: 1 when no \fB\-debug\fR)
.TP
\fB\-printtoconsole\fR
Send trace/debug info to console instead of debug.log file
.TP
\fB\-rpcuser=\fR<user>
Username for JSON\-RPC connections
.TP
\fB\-rpcpassword=\fR<pw>
Password for JSON\-RPC connections
.TP
\fB\-rpcport=\fR<port>
Listen for JSON\-RPC connections on <port> (default: 9998 or testnet: 19998)
.TP
\fB\-rpcallowip=\fR<ip>
Allow JSON\-RPC connections from specified IP address
.TP
\fB\-rpcthreads=\fR<n>
Set the number of threads to service RPC calls (default: 4)
.TP
\fB\-blocknotify=\fR<cmd>
Execute command when the best block changes (%s in cmd is replaced by block hash)
.TP
\fB\-walletnotify=\fR<cmd>
Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)
.TP
\fB\-alertnotify=\fR<cmd>
Execute command when a relevant alert is received (%s in cmd is replaced by message)
.TP
\fB\-upgradewallet\fR
Upgrade wallet to latest format
.TP
\fB\-keypool=\fR<n>
Set key pool size to <n> (default: 100)
.TP
\fB\-rescan\fR
Rescan the block chain for missing wallet transactions
.TP
\fB\-salvagewallet\fR
Attempt to recover private keys from a corrupt wallet.dat
.TP
\fB\-checkblocks=\fR<n>
How many blocks to check at startup (default: 288, 0 = all)
.TP
\fB\-checklevel=\fR<n>
How thorough the block verification is (0\-4, default: 3)
.TP
\fB\-txindex\fR
Maintain a full transaction index (default: 0)
.TP
\fB\-loadblock=\fR<file>
Imports blocks from external blk000??.dat file
.TP
\fB\-reindex\fR
Rebuild block chain index from current blk000??.dat files
.TP
\fB\-par=\fR<n>
Set the number of script verification threads (1\-16, 0=auto, default: 0)
.SS "Block creation options:"
.TP
\fB\-blockminsize=\fR<n>
Set minimum block size in bytes (default: 0)
.TP
\fB\-blockmaxsize=\fR<n>
Set maximum block size in bytes (default: 250000)
.HP
\fB\-blockprioritysize=\fR<n> Set maximum size of high\-priority/low\-fee transactions in bytes (default: 27000)
.PP
SSL options: (see the Bitcoin Wiki for SSL setup instructions)
.TP
\fB\-rpcssl\fR
Use OpenSSL (https) for JSON\-RPC connections
.TP
\fB\-rpcsslcertificatechainfile=\fR<file.cert>
Server certificate file (default: server.cert)
.TP
\fB\-rpcsslprivatekeyfile=\fR<file.pem>
Server private key (default: server.pem)
.TP
\fB\-rpcsslciphers=\fR<ciphers>
Acceptable ciphers (default: TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH)
.SS "UI options:"
.TP
\fB\-lang=\fR<lang>
Set language, for example "de_DE" (default: system locale)
.TP
\fB\-min\fR
Start minimized
.TP
\fB\-splash\fR
Show splash screen on startup (default: 1)