# Geth 入门---命令行操作

**Published by:** [fanly](https://paragraph.com/@yemeishu/)
**Published on:** 2022-07-17
**URL:** https://paragraph.com/@yemeishu/geth

## Content

启动第一个节点geth --datadir data0 --dev console coinbase: 0x1fcc9699301f2d79c064430a5d44ccd61e8c20de at block: 0 (Thu Jan 01 1970 08:00:00 GMT+0800 (CST)) 获取节点实例admin.nodeInfo.enode "enode://8ddd204baf8cedeb2451d9b0ad6abb09fa24319411fb0a5c164c8da6a5fea8b2f0c8d6a2cdbfc74413519ad1441fa7703d349a13b12a91aae6c956e95000db73@127.0.0.1:0" 查看账户，默认分配了一个开发者账户 eth.accounts["0x1fcc9699301f2d79c064430a5d44ccd61e8c20de"] 这个也就是上文显示的 coinbase。创建账户创建账户，「mumu」是新账户的密码 personal.newAccount('mumu')> personal.newAccount('1q2w3e4r5t6y1') INFO [05-26|16:37:17.083] Your new key was generated address=0xf3D69d972E88aF6C2eCB7E64F94f737aa5355Dd5 WARN [05-26|16:37:17.085] Please backup your key file! path=/Users/yemeishu/Documents/code/web3/data0/keystore/UTC--2022-05-26T08-37-16.921851000Z--f3d69d972e88af6c2ecb7e64f94f737aa5355dd5 WARN [05-26|16:37:17.085] Please remember your password! "0xf3d69d972e88af6c2ecb7e64f94f737aa5355dd5" 查看是否创建成功：> eth.accounts ["0x1fcc9699301f2d79c064430a5d44ccd61e8c20de", "0xf3d69d972e88af6c2ecb7e64f94f737aa5355dd5"] > 查看两个账号余额：> eth.getBalance(eth.accounts[0]) 1.15792089237316195423570985008687907853269984665640564039457584007913129639927e+77 > eth.getBalance(eth.accounts[1]) 0 转账这时候我们从 coinbase 账号转移 1 个以太币给新账户：eth.sendTransaction({from: eth.accounts[0], to: eth.accounts[1], value: web3.toWei(1,'ether')}) 这个挺好理解的，就是执行一次交易 (transaction)，这过程需要一段时间执行：转账成功：解锁账户 在部署合约前需要先解锁账户personal.unlockAccount(eth.accounts[1]) 输入密码，解锁成功。

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