### cmd包分析
#### cmd下面总共有13个子包，除了util包之外，每个子包都有一个主函数,每个主函数的init方法中都定义了该主函数支持的命令，如
##### geth包下面的：
```
func init() {
// Initialize the CLI app and start Geth
app.Action = geth
app.HideVersion = true // we have a command to print the version
app.Copyright = "Copyright 2013-2017 The go-ethereum Authors"
app.Commands = []cli.Command{
// See chaincmd.go:
initCommand,
importCommand,
exportCommand,
copydbCommand,
removedbCommand,
dumpCommand,
// See monitorcmd.go:
monitorCommand,
// See accountcmd.go:
accountCommand,
walletCommand,
// See consolecmd.go:
consoleCommand,
attachCommand,
javascriptCommand,
// See misccmd.go:
makecacheCommand,
makedagCommand,
versionCommand,
bugCommand,
licenseCommand,
// See config.go
dumpConfigCommand,
}
sort.Sort(cli.CommandsByName(app.Commands))
}
```
###### 再单独分析initCommand:
```
initCommand = cli.Command{
Action: utils.MigrateFlags(initGenesis),
Name: "init",
Usage: "Bootstrap and initialize a new genesis block",
ArgsUsage: "<genesisPath>",
Flags: []cli.Flag{
utils.DataDirFlag,
utils.LightModeFlag,
},
Category: "BLOCKCHAIN COMMANDS",
Description: `
The init command initializes a new genesis block and definition for the network.
This is a destructive action and changes the network in which you will be
participating.
```
###### 其中Name是对应命令的指令，action是调用该指令去完成的动作，usage表示用途,arguUsage显示该命令后面跟的参数个数以及每个参数的意义,
###### 该init方法其实就是去初始化创世块,flags代表的是这个子命令额外可以执行的命令,如改init命令可以携带两个参数，点进去utils.DataDirFlag可以看到：
```
// General settings
DataDirFlag = DirectoryFlag{
Name: "datadir",
Usage: "Data directory for the databases and keystore",
Value: DirectoryString{node.DefaultDataDir()},
}
```
* __可以用 --datadir [dir]来指定数据库的路径，如果没有指定由于该参数有value所以会启用默认的路径，也是home目录下面的.ethereum.__
* __/cmd/wnode/main.go　通过连接其他节点启动__
* __/cmd/geth /cmd/swarm　都是定义了很多命令__





### eth下cmd的rlpdump子包,该包的主要作用从给定文件中转储RLP数据以可读的形式．如果文件名被省略，数据将从stdin中读取
/rlpdump
##### 解码rlp的数据
###### rlpdump的command的help
```
Usage: /tmp/___cmd_rlpdump_test [-noascii] [-hex <data>] [filename]
-hex string
dump given hex data
-noascii
don't print ASCII strings readably
-single
print only the first element, discard the rest
Dumps RLP data from the given file in readable form.
If the filename is omitted, data is read from stdin.
```
###### example1:
```
demo command: --hex f872f870845609a1ba64c0b8660480136e573eb81ac4a664f8f76e4887ba927f791a053ec5ff580b1037a8633320ca70f8ec0cdea59167acaa1debc07bc0a0b3a5b41bdf0cb4346c18ddbbd2cf222f54fed795dde94417d2e57f85a580d87238efc75394ca4a92cfe6eb9debcc3583c26fee8580
success_result_demo:
[
[
5609a1ba,
"d",
[],
0480136e573eb81ac4a664f8f76e4887ba927f791a053ec5ff580b1037a8633320ca70f8ec0cdea59167acaa1debc07bc0a0b3a5b41bdf0cb4346c18ddbbd2cf222f54fed795dde94417d2e57f85a580d87238efc75394ca4a92cfe6eb9debcc3583c26fee85,
"",
],
]
```
###### example2:
```
demo command: --noascii --hex CE0183FFFFFFC4C304050583616263
success_result_demo:
[
01,
ffffff,
[
[
04,
05,
05,
],
],
616263,
]
```
### cmd包下的p2psim子包的分析, p2psim is a command line client for the HTTP API
##### 首先我们启动对应的main函数,对应的启动参数是`--help`,来查看该包下所有命令的使用,结果如下:
```
NAME:
___go_build_main_go__1_ - devp2p simulation command-line client
USAGE:
___go_build_main_go__1_ [global options] command [command options] [arguments...]
VERSION:
0.0.0
COMMANDS:
show show network information
events stream network events
snapshot create a network snapshot to stdout
load load a network snapshot from stdin
node manage simulation nodes
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--api value simulation API URL (default: "http://localhost:8888") [$P2PSIM_API_URL]
--help, -h show help
--version, -v print the version
```
##### 该子包提供如何下的命令:
```
p2psim show
p2psim events [--current] [--filter=FILTER]
p2psim snapshot
p2psim load
p2psim node create [--name=NAME] [--services=SERVICES] [--key=KEY]
p2psim node list
p2psim node show <node>
p2psim node start <node>
p2psim node stop <node>
p2psim node connect <node> <peer>
p2psim node disconnect <node> <peer>
p2psim node rpc <node> <method> [<args>] [--subscribe]
```
##### 要正常使用该子包下的命令，我们需要运行`/p2p/simulations/examples/ping-pong.go`的主函数来启动一个包含运行简单的节点的仿真网络.
正常启动后,你将看到:
```
INFO [01-23|11:17:10] using sim adapter
INFO [01-23|11:17:10] starting simulation server on 0.0.0.0:8888...
```
##### 该服务启动后,提供如下的API,其作用等同于上面的命令,命令调用的实现其实就是调用API,访问的路径前缀就是`0.0.0.0:8888`:
```
GET / Get network information
POST /start Start all nodes in the network
POST /stop Stop all nodes in the network
GET /events Stream network events
GET /snapshot Take a network snapshot
POST /snapshot Load a network snapshot
POST /nodes Create a node
GET /nodes Get all nodes in the network
GET /nodes/:nodeid Get node information
POST /nodes/:nodeid/start Start a node
POST /nodes/:nodeid/stop Stop a node
POST /nodes/:nodeid/conn/:peerid Connect two nodes
DELETE /nodes/:nodeid/conn/:peerid Disconnect two nodes
GET /nodes/:nodeid/rpc Make RPC requests to a node via WebSocket
```
##### 此处不深究API,仿真网络的服务已经起来了,下面开始p2psim包下命令的使用:
__/p2psim__
* show
```
function:显示当前仿真网络的状态
args:""
demo: show
notice:
success_result_demo:
NODES 0
CONNS 0
```
* snapshot
```
function:导出当前仿真网络的节点信息
args:""
demo: shapshot
notice:
success_result_demo:
{"nodes":[{"node":{"config":{"id":"085416957c3a0afef6aabe6c0d6b27b7cf8a61f28a3a5439010fcc9e49945a1818ea38946dda8c82004b231ab771450ee0d87886163b65eaa48ecfbcb85e871d","private_key":"3480d230f453e7c207bbd3b770bf774dc8a17e599394f9283147a35c3ead561c","name":"node1","services":["ping-pong"]},"up":true}},{"node":{"config":{"id":"cedbaecccfe42d04b742d1be6e924e0654a7eb1aa584d497f98d24951b156ada84bcfc6455ff37ba1fc81179d0a7c3da1ba34945be19d1fe5cd4c8a32a659a7b","private_key":"b7592cdeee6195c4486fcdd8007e1aedfd3a49e6c9f53e0845bf977d4ad043cc","name":"node2","services":["ping-pong"]},"up":false}}],"conns":[{"one":"cedbaecccfe42d04b742d1be6e924e0654a7eb1aa584d497f98d24951b156ada84bcfc6455ff37ba1fc81179d0a7c3da1ba34945be19d1fe5cd4c8a32a659a7b","other":"085416957c3a0afef6aabe6c0d6b27b7cf8a61f28a3a5439010fcc9e49945a1818ea38946dda8c82004b231ab771450ee0d87886163b65eaa48ecfbcb85e871d","up":false}]}
```
* node
> * create
```
function:创建一个节点
args:[--name=NAME] [--services=SERVICES] [--key=KEY]
demo: node create --name node1
notice:
success_result_demo:
Created node1
```
> * list
```
function:列出当前仿真网络的节点信息
args:""
demo: node list
notice:
success_result_demo:
NAME PROTOCOLS ID
node1 085416957c3a0afef6aabe6c0d6b27b7cf8a61f28a3a5439010fcc9e49945a1818ea38946dda8c82004b231ab771450ee0d87886163b65eaa48ecfbcb85e871d
node2 cedbaecccfe42d04b742d1be6e924e0654a7eb1aa584d497f98d24951b156ada84bcfc6455ff37ba1fc81179d0a7c3da1ba34945be19d1fe5cd4c8a32a659a7b
```
> * show
```
function:查看仿真网络中某个节点的具体信息
args:<node>
demo: node show node1
notice:
success_result_demo:
NAME node1
PROTOCOLS
ID 085416957c3a0afef6aabe6c0d6b27b7cf8a61f28a3a5439010fcc9e49945a1818ea38946dda8c82004b231ab771450ee0d87886163b65eaa48ecfbcb85e871d
ENODE enode://085416957c3a0afef6aabe6c0d6b27b7cf8a61f28a3a5439010fcc9e49945a1818ea38946dda8c82004b231ab771450ee0d87886163b65eaa48ecfbcb85e871d@127.0.0.1:30303
```
> * start
```
function:启动一个节点
args:<node>
demo: node start node1
notice:
success_result_demo:
Started node1
```
> * connect
```
function:将一个节点连接到另外一个节点
args:<node> <peer>
demo: node connect node2 node1
notice:
success_result_demo:
Connected node2 to node1
```
> * disconnect
```
function:节点断开连接
args:<node> <peer>
demo: node disconnect node2 node1
notice:
success_result_demo:
Disconnected node2 from node1
```
> * stop
```
function:停止一个节点
args:<node>
demo: node stop node2
notice:
success_result_demo:
Stopped node2
```
> * rpc
```
function:调用rpc接口
args:<node> <method> [<args>] [--subscribe]
demo: node rpc node1 admin
notice:
success_result_demo:
// TODO
```
### cmd包下的geth子包主函数启动的各个子命令解析
#### /geth
* __init__
```
function:导入创世块的json,以指定的json作为创世块
args:<genesisPath>
demo: init /home/yujian/eth-go/genesis.json
notice:ethereum默认创建路径为home目录的.ethereum,如果该目录下已经写入过创世快，会执行失败
success_result_demo:
WARN [01-16|10:25:12] No etherbase set and no accounts found as default
INFO [01-16|10:25:12] Allocated cache and file handles database=/home/yujian/.ethereum/geth/chaindata cache=16 handles=16
INFO [01-16|10:25:12] Writing custom genesis block
INFO [01-16|10:25:12] Successfully wrote genesis state database=chaindata hash=bf2891…ad1419
INFO [01-16|10:25:12] Allocated cache and file handles database=/home/yujian/.ethereum/geth/lightchaindata cache=16 handles=16
INFO [01-16|10:25:12] Writing custom genesis block
INFO [01-16|10:25:12] Successfully wrote genesis state database=lightchaindata hash=bf2891…ad1419
```
* __import__
```
function:导入区块数据到当前运行的链中
args:<filename> (<filename 2> ... <filename N>)
demo: import /home/yujian/eth-block.txt
notice:如果导入的文件只要一个是错误的，那么会失败，如果有多个文件错误，那么程序会继续执行忽略错误的．
success_result_demo:
WARN [01-16|11:00:32] No etherbase set and no accounts found as default
INFO [01-16|11:00:32] Allocated cache and file handles database=/home/yujian/.ethereum/geth/chaindata cache=128 handles=1024
Import done in 306.866µs.
INFO [01-16|11:00:32] Disk storage enabled for ethash caches dir=/home/yujian/.ethereum/geth/ethash count=3
Compactions
INFO [01-16|11:00:32] Disk storage enabled for ethash DAGs dir=/home/yujian/.ethash count=2
Level | Tables | Size(MB) | Time(sec) | Read(MB) | Write(MB)
-------+------------+---------------+---------------+---------------+---------------
INFO [01-16|11:00:32] Loaded most recent local header number=0 hash=bf2891…ad1419 td=33554432
0 | 3 | 0.00094 | 0.00000 | 0.00000 | 0.00000
INFO [01-16|11:00:32] Loaded most recent local full block number=0 hash=bf2891…ad1419 td=33554432
Trie cache misses: 0
INFO [01-16|11:00:32] Loaded most recent local fast block number=0 hash=bf2891…ad1419 td=33554432
Trie cache unloads: 0
INFO [01-16|11:00:32] Importing blockchain file=/home/yujian/eth-block.txt
Object memory: 34.677 MB current, 34.670 MB peak
System memory: 74.100 MB current, 73.850 MB peak
Allocations: 0.015 million
GC pause: 10.454997ms
Compacting entire database...
INFO [01-16|11:00:33] Database closed database=/home/yujian/.ethereum/geth/chaindata
Compaction done in 64.422235ms.
Compactions
Level | Tables | Size(MB) | Time(sec) | Read(MB) | Write(MB)
-------+------------+---------------+---------------+---------------+---------------
0 | 0 | 0.00000 | 0.00451 | 0.00000 | 0.00021
1 | 1 | 0.00053 | 0.00435 | 0.00114 | 0.00053
```
* __export__
```
function:导出区块数据到指定的文件
args:<filename> [<blockNumFirst> <blockNumLast>]
demo: export /home/yujian/eth-block.txt
notice:
success_result_demo:
WARN [01-16|10:51:36] No etherbase set and no accounts found as default
INFO [01-16|10:51:36] Allocated cache and file handles database=/home/yujian/.ethereum/geth/chaindata cache=128 handles=1024
INFO [01-16|10:51:36] Disk storage enabled for ethash caches dir=/home/yujian/.ethereum/geth/ethash count=3
INFO [01-16|10:51:36] Disk storage enabled for ethash DAGs dir=/home/yujian/.ethash count=2
Export done in 628.951µsINFO [01-16|10:51:36] Loaded most recent local header number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|10:51:36] Loaded most recent local full block number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|10:51:36] Loaded most recent local fast block number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|10:51:36] Exporting blockchain file=/home/yujian/eth-block.txt
INFO [01-16|10:51:36] Exporting batch of blocks count=1
INFO [01-16|10:51:36] Exported blockchain file=/home/yujian/eth-block.txt
```
* __copydb__
```
function:从存在的链数据文件夹中创建一条本地链
args:<sourceChaindataDir>
demo: copydb /home/yujian/eth-block.txt
notice:
success_result_demo:
WARN [01-16|11:35:55] No etherbase set and no accounts found as default
INFO [01-16|11:35:55] Allocated cache and file handles database=/home/yujian/.ethereum/geth/chaindata cache=128 handles=1024
INFO [01-16|11:35:55] Disk storage enabled for ethash caches dir=/home/yujian/.ethereum/geth/ethash count=3
INFO [01-16|11:35:55] Disk storage enabled for ethash DAGs dir=/home/yujian/.ethash count=2
INFO [01-16|11:35:55] Loaded most recent local header number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|11:35:55] Loaded most recent local full block number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|11:35:55] Loaded most recent local fast block number=0 hash=bf2891…ad1419 td=33554432
INFO [01-16|11:35:55] Allocated cache and file handles database=/home/yujian/eth-go/geth/chaindata cache=128 handles=256
INFO [01-16|11:35:55] Block synchronisation started
INFO [01-16|11:35:55] Imported new state entries count=1 elapsed=33.277µs processed=1 pending=0 retry=0 duplicate=0 unexpected=0
INFO [01-16|11:35:56] Imported new block headers count=11 elapsed=1.276s number=11 hash=ec3374…59a2ba ignored=0
Database copy done in 1.280940454s
Compacting entire database...
INFO [01-16|11:35:56] Imported new chain segment blocks=11 txs=0 mgas=0.000 elapsed=1.961ms mgasps=0.000 number=11 hash=ec3374…59a2ba
Compaction done in 11.130389ms.
```
* __removedb__
```
function:移除当前链的数据库
args:""
demo: removedb
notice:默认当前链的数据在home目录下的.ethereum目录下
success_result_demo:
WARN [01-16|11:48:09] No etherbase set and no accounts found as default
/home/yujian/.ethereum/geth/chaindata
Remove this database? [y/N] y
/home/yujian/.ethereum/geth/lightchaindata
INFO [01-16|11:48:19] Database successfully deleted database=chaindata elapsed=7.832ms
Remove this database? [y/N] y
INFO [01-16|11:48:27] Database successfully deleted database=lightchaindata elapsed=481.229µs
```
* __dump__
```
function:转存指定的块
args:[<blockHash> | <blockNum>]...
demo: dump 0
notice:
success_result_demo:
"storage": {}
},
"af3cb5965933e7dad883693b9c3e15beb68a4873": {
"balance": "2000000000000000000000",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
"code": "",
"storage": {}
},
"af4493e8521ca89d95f5267c1ab63f9f45411e1b": {
"balance": "200000000000000000000",
"nonce": 0,
"root": "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
"codeHash": "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470",
"code": "",
"storage": {}
},
}
}
INFO [01-16|14:02:06] Database closed database=/home/yujian/.ethereum/geth/chaindata
```
* __monitor__
```
function:监视和可视化节点指标
args:""
demo: monitor
notice:该命令本地未调通,需要先启链，才能调用该命令去看监控的状态
success_result_demo:
// TODO
```
* __account__
```
function:管理账户
args:"[new|list|update|import]"
demo: account new
notice:“帐户导入”选项只能用于导入通用密钥文件
success_result_demo:
WARN [01-16|14:44:44] No etherbase set and no accounts found as default
Your new account is locked with a password. Please give a password. Do not forget this password.
!! Unsupported terminal, password will be echoed.
Passphrase: 123456
Repeat passphrase: 123456
Address: {2a23e9223d7af9c56f5abd0c8226021b51c98cbc}
Process finished with exit code 0
```
* __wallet__
```
function:导入预付款钱包(一般用不到，用的是account功能)
args:""
demo: wallet import
notice:"钱包导入"选项只能用于导入预售钱包
success_result_demo:
```
* __console__
```
function:开启一条私有链,并打开一个可视化的js钱包控制台
args:""
demo: console
notice:
success_result_demo:
INFO [01-16|15:26:13] Starting peer-to-peer node instance=Geth/v1.7.3-unstable/linux-amd64/go1.9.2
INFO [01-16|15:26:13] Allocated cache and file handles database=/home/yujian/.ethereum/geth/chaindata cache=128 handles=1024
INFO [01-16|15:26:14] Initialised chain configuration config="{ChainID: 1 Homestead: 1150000 DAO: 1920000 DAOSupport: true EIP150: 2463000 EIP155: 2675000 EIP158: 2675000 Byzantium: 4370000 Engine: ethash}"
INFO [01-16|15:26:14] Disk storage enabled for ethash caches dir=/home/yujian/.ethereum/geth/ethash count=3
INFO [01-16|15:26:14] Disk storage enabled for ethash DAGs dir=/home/yujian/.ethash count=2
INFO [01-16|15:26:14] Initialising Ethereum protocol versions="[63 62]" network=1
INFO [01-16|15:26:14] Loaded most recent local header number=1127484 hash=ae7ee2…52ae4c td=8985161313979839462
INFO [01-16|15:26:14] Loaded most recent local full block number=0 hash=d4e567…cb8fa3 td=17179869184
INFO [01-16|15:26:14] Loaded most recent local fast block number=1092806 hash=6e839a…2eb127 td=8395031237882431385
INFO [01-16|15:26:14] Upgrading chain index type=bloombits percentage=80
INFO [01-16|15:26:14] Loaded local transaction journal transactions=0 dropped=0
INFO [01-16|15:26:14] Regenerated local transaction journal transactions=0 accounts=0
INFO [01-16|15:26:14] Starting P2P networking
INFO [01-16|15:26:16] UDP listener up self=enode://bef014afb2b63c749d1e3917a25dc9e508cb67e6010965f11695beef50c29f40a5949fc2082487fadb262c30ff2fb626ce86d4a7cf994d025f5dfee7231051e6@[::]:30303
INFO [01-16|15:26:16] RLPx listener up self=enode://bef014afb2b63c749d1e3917a25dc9e508cb67e6010965f11695beef50c29f40a5949fc2082487fadb262c30ff2fb626ce86d4a7cf994d025f5dfee7231051e6@[::]:30303
INFO [01-16|15:26:16] IPC endpoint opened: /home/yujian/.ethereum/geth.ipc
Welcome to the Geth JavaScript console!
instance: Geth/v1.7.3-unstable/linux-amd64/go1.9.2
coinbase: 0x2a23e9223d7af9c56f5abd0c8226021b51c98cbc
at block: 0 (Thu, 01 Jan 1970 08:00:00 CST)
datadir: /home/yujian/.ethereum
modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0
```
* __attach__
```
function:打开一个可视化的js钱包控制台(连接到一个指定的链)
args:
--jspath loadScript JavaScript root path for loadScript (default: ".")
--exec value Execute JavaScript statement
--preload value Comma separated list of JavaScript files to preload into the console
--datadir "/root/.ethereum" Data directory for the databases and keystore
demo:attach --datadir="/home/yujian/.ethereum/geth.ipc"
notice:必须启动一条本地链，这样才能连接过去
success_result_demo:
Welcome to the Geth JavaScript console!
instance: Geth/v1.7.3-unstable/linux-amd64/go1.9.2
coinbase: 0x2a23e9223d7af9c56f5abd0c8226021b51c98cbc
at block: 0 (Thu, 01 Jan 1970 08:00:00 CST)
datadir: /home/yujian/.ethereum
modules: admin:1.0 debug:1.0 eth:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0
```
* __js__
```
function:执行指定的js文件
args:<jsfile> [jsfile...]
demo:js
notice:
success_result_demo:
```
* __makecache__
```
function:生成ethhash验证缓存(测试使用)
args:<blockNum> <outputDir>
demo:makecache 0 /home/yujian/
notice:
success_result_demo:
在对应的输出目录，将会生成一个cache文件,如 cache-R23-0000000000000000
```
* __makedag__
```
function:生成ethhash mining dag(测试使用)
args:<blockNum> <outputDir>
demo:makedag 0 /home/yujian/
notice:
success_result_demo:
INFO [01-16|17:50:36] Generating DAG in progress epoch=0 percentage=92 elapsed=3m2.525s
INFO [01-16|17:50:38] Generating DAG in progress epoch=0 percentage=93 elapsed=3m4.338s
INFO [01-16|17:50:40] Generating DAG in progress epoch=0 percentage=94 elapsed=3m6.058s
INFO [01-16|17:50:41] Generating DAG in progress epoch=0 percentage=95 elapsed=3m7.795s
INFO [01-16|17:50:43] Generating DAG in progress epoch=0 percentage=96 elapsed=3m9.542s
INFO [01-16|17:50:45] Generating DAG in progress epoch=0 percentage=97 elapsed=3m11.380s
INFO [01-16|17:50:47] Generating DAG in progress epoch=0 percentage=98 elapsed=3m13.129s
INFO [01-16|17:50:49] Generating DAG in progress epoch=0 percentage=99 elapsed=3m15.303s
INFO [01-16|17:50:49] Generated ethash verification cache epoch=0 elapsed=3m15.306s
Process finished with exit code 0
在对应的输出目录,将会生成一个full文件,如 full-R23-0000000000000000
```
* __version__
```
function:打印版本数据
args:""
demo:version
notice:
success_result_demo:
Geth
Version: 1.7.3-unstable
Architecture: amd64
Protocol Versions: [63 62]
Network Id: 1
Go Version: go1.9.2
Operating System: linux
GOPATH=/home/yujian/blockchain-workspace/go-project
GOROOT=/usr/local/go
```
* __bug__
```
function:打开一个窗口,直接跳转到ethereum的github仓库的issue
args:""
demo:bug
notice:
success_result_demo:
运行后会自动打开浏览器，跳转到ethereum的issue编辑页面　
```
* __license__
```
function:显示geth的license信息
args:""
demo:license
notice:
success_result_demo:
Geth is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Geth is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with geth. If not, see <http://www.gnu.org/licenses/>.
```
* __dumpconfig__
```
function:显示配置信息
args:""
demo:dumpconfig
notice:
success_result_demo:
[Eth]
NetworkId = 1
SyncMode = "fast"
LightPeers = 20
DatabaseCache = 128
Etherbase = "0x2a23e9223d7af9c56f5abd0c8226021b51c98cbc"
GasPrice = 18000000000
EthashCacheDir = "ethash"
EthashCachesInMem = 2
EthashCachesOnDisk = 3
EthashDatasetDir = "/home/yujian/.ethash"
EthashDatasetsInMem = 1
EthashDatasetsOnDisk = 2
EnablePreimageRecording = false
[Eth.TxPool]
NoLocals = false
Journal = "transactions.rlp"
Rejournal = 3600000000000
PriceLimit = 1
PriceBump = 10
AccountSlots = 16
GlobalSlots = 4096
AccountQueue = 64
GlobalQueue = 1024
Lifetime = 10800000000000
[Eth.GPO]
Blocks = 10
Percentile = 50
[Shh]
MaxMessageSize = 1048576
MinimumAcceptedPOW = 2e-01
[Node]
DataDir = "/home/yujian/.ethereum"
IPCPath = "geth.ipc"
HTTPPort = 8545
HTTPModules = ["net", "web3", "eth", "shh"]
WSPort = 8546
WSModules = ["net", "web3", "eth", "shh"]
[Node.P2P]
MaxPeers = 25
NoDiscovery = false
DiscoveryV5Addr = ":30304"
BootstrapNodes = ["enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303", "enode://3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99@13.93.211.84:30303", "enode://78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d@191.235.84.50:30303", "enode://158f8aab45f6d19c6cbf4a089c2670541a8da11978a2f90dbf6a502a4a3bab80d288afdbeb7ec0ef6d92de563767f3b1ea9e8e334ca711e9f8e2df5a0385e8e6@13.75.154.138:30303", "enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303", "enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303"]
BootstrapNodesV5 = ["enode://0cc5f5ffb5d9098c8b8c62325f3797f56509bff942704687b6530992ac706e2cb946b90a34f1f19548cd3c7baccbcaea354531e5983c7d1bc0dee16ce4b6440b@40.118.3.223:30305", "enode://1c7a64d76c0334b0418c004af2f67c50e36a3be60b5e4790bdac0439d21603469a85fad36f2473c9a80eb043ae60936df905fa28f1ff614c3e5dc34f15dcd2dc@40.118.3.223:30308", "enode://85c85d7143ae8bb96924f2b54f1b3e70d8c4d367af305325d30a61385a432f247d2c75c45c6b4a60335060d072d7f5b35dd1d4c45f76941f62a4f83b6e75daaf@40.118.3.223:30309"]
StaticNodes = []
TrustedNodes = []
ListenAddr = ":30303"
EnableMsgEvents = false
[Dashboard]
Host = "localhost"
Port = 8080
Refresh = 3000000000　
```
##### 参考资料
* [eth钱包创建](https://www.myetherwallet.com/#generate-wallet)
* [eth命令使用解释](http://www.blockcode.org/archives/185)

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