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Command Line Options
geth [global options] command [command options] [arguments...]
VERSION:
1.0.0
COMMANDS:
recover attempts to recover a corrupted database by setting a new block by number or hash. See help recover.
blocktest loads a block test file
import import a blockchain file
export export blockchain into file
upgradedb upgrade chainblock database
removedb Remove blockchain and state databases
dump dump a specific block from storage
monitor Geth Monitor: node metrics monitoring and visualization
makedag generate ethash dag (for testing)
version print ethereum version numbers
wallet ethereum presale wallet
account manage accounts
console Geth Console: interactive JavaScript environment
attach Geth Console: interactive JavaScript environment (connect to node)
js executes the given JavaScript files in the Geth JavaScript VM
help Shows a list of commands or help for one command
GLOBAL OPTIONS:
--identity Custom node name
--unlock Unlock the account given until this program exits (prompts for password). '--unlock n' unlocks the n-th account in order or creation.
--password Path to password file to use with options and subcommands needing a password
--genesis Inserts/Overwrites the genesis block (json format)
--bootnodes Space-separated enode URLs for p2p discovery bootstrap
--datadir "/Users/tron/Library/Ethereum" Data directory to be used
--blockchainversion "3" Blockchain version (integer)
--jspath "." JS library path to be used with console and js subcommands
--port "30303" Network listening port
--maxpeers "25" Maximum number of network peers (network disabled if set to 0)
--maxpendpeers "0" Maximum number of pending connection attempts (defaults used if set to 0)
--etherbase "0" Public address for block mining rewards. By default the address first created is used
--gasprice "1000000000000" Sets the minimal gasprice when mining transactions
--minerthreads "8" Number of miner threads
--mine Enable mining
--autodag Enable automatic DAG pregeneration
--nat "any" NAT port mapping mechanism (any|none|upnp|pmp|extip:<IP>)
--natspec Enable NatSpec confirmation notice
--nodiscover Disables the peer discovery mechanism (manual peer addition)
--nodekey P2P node key file
--nodekeyhex P2P node key as hex (for testing)
--rpc Enable the JSON-RPC server
--rpcaddr "127.0.0.1" Listening address for the JSON-RPC server
--rpcport "8545" Port on which the JSON-RPC server should listen
--rpcapi "db,eth,net,web3" Specify the API's which are offered over the HTTP RPC interface
--ipcdisable Disable the IPC-RPC server
--ipcapi "admin,db,eth,debug,miner,net,shh,txpool,personal,web3" Specify the API's which are offered over the IPC interface
--ipcpath "/Users/tron/Library/Ethereum/geth.ipc" Filename for IPC socket/pipe
--exec Execute javascript statement (only in combination with console/attach)
--shh Enable whisper
--vmdebug Virtual Machine debug output
--networkid "1" Network Id (integer)
--rpccorsdomain Domain on which to send Access-Control-Allow-Origin header
--verbosity "3" Logging verbosity: 0-6 (0=silent, 1=error, 2=warn, 3=info, 4=core, 5=debug, 6=debug detail)
--backtrace_at ":0" If set to a file and line number (e.g., "block.go:271") holding a logging statement, a stack trace will be logged
--logtostderr Logs are written to standard error instead of to files.
--vmodule "" The syntax of the argument is a comma-separated list of pattern=N, where pattern is a literal file name (minus the ".go" suffix) or "glob" pattern and N is a log verbosity level.
--logfile Send log output to a file
--logjson Send json structured log output to a file or '-' for standard output (default: no json output)
--pprof Enable the profiling server on localhost
--pprofport "6060" Port on which the profiler should listen
--metrics Enables metrics collection and reporting
--solc "solc" solidity compiler to be used
--gpomin "1000000000000" Minimum suggested gas price
--gpomax "100000000000000" Maximum suggested gas price
--gpofull "80" Full block threshold for gas price calculation (%)
--gpobasedown "10" Suggested gas price base step down ratio (1/1000)
--gpobaseup "100" Suggested gas price base step up ratio (1/1000)
--gpobasecf "110" Suggested gas price base correction factor (%)
--help, -h show help
Note that the default for datadir is platform-specific. See backup & restore for more information.
Import ether presale wallet into your node (prompts for password):
geth wallet import /path/to/my/etherwallet.json
Import an EC privatekey into an ethereum account (prompts for password):
geth account import /path/to/key.prv
Bring up the geth javascript console:
geth --verbosity 5 --jspath /mydapp/js console 2>> /path/to/logfile
Execute test.js javascript using js API and log Debug-level messages to /path/to/logfile:
geth --verbosity 6 js test.js 2>> /path/to/logfile
Import a blockchain from file:
geth import blockchain.bin
When the consensus algorithm is changed blocks in the blockchain must be reimported with the new algorithm. Geth will inform the user with instructions when and how to do this when it's necessary.
geth upgradedb
Start two mining nodes using different data directories listening on ports 30303 and 30304, respectively:
geth --mine --minerthreads 4 --datadir /usr/local/share/ethereum/30303 --port 30303
geth --mine --minerthreads 4 --datadir /usr/local/share/ethereum/30304 --port 30304
Start an rpc client on port 8000:
geth --rpc=true --rpcport 8000 --rpccorsdomain '"*"'
Launch the client without network:
geth --maxpeers 0 --nodiscover --networdid 3301 js justwannarunthis.js
In the datadir, delete the blockchain directory. For an example above:
rm -rf /usr/local/share/ethereum/30303/blockchain
The lines below are meant only for test network and safe environments for non-interactive scripted use.
geth --datadir /tmp/eth/42 --password <(echo -n notsosecret) account new 2>> /tmp/eth/42.log
geth --datadir /tmp/eth/42 --port 30342 js <(echo 'console.log(admin.nodeInfo().NodeUrl)') > enode 2>> /tmp/eth/42.log
geth --datadir /tmp/eth/42 --port 30342 --password <(echo -n notsosecret) --unlock primary --minerthreads 4 --mine 2>> /tmp/eth/42.log
Attach a console to a running geth instance. By default this happens over IPC over the default IPC endpoint but when necessary a custom endpoint could be specified:
geth attach ipc:/some/path
geth attach rpc:http://host:8545
WARNING: This is not available for the latest frontier.
The same flags can be set via config file (by default <datadir>/conf.ini) as well as environment variables.
Precedence: default < config file < environment variables < command line