https://stackoverflow.com/questions/34624510/how-to-use-makefile-in-docker-machine tce-load -wi make

Use keythereum, web3 npm install keythereum npm install web3 ．datadir need to correct. UTC/keystore/UTC–2019-03-25T09-10-35.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ．address need correct “0xooooooooooooooooooooooooo” ．password need correct, this example is empty. ．web3 localhost is fake, don’t need have geth. var keythereum = require("keythereum"); var datadir = "UTC"; var address= "0xooooooooooooooooooooooooo"; const password = ""; var keyObject = keythereum.importFromFile(address, datadir); var privateKey = keythereum.recover(password, keyObject); console.log(privateKey.toString('hex')); Web3 = require('web3') web3 = new Web3(new Web3.providers.HttpProvider("localhost")); var address = web3.eth.accounts.privateKeyToAccount("0x"+privateKey.toString('hex')); console.log(address);

https://segmentfault.com/a/1190000019776978

https://www.oxxostudio.tw/articles/201904/firebase-realtime-database-rules.html https://angularfirebase.com/lessons/understanding-firebase-database-rules-by-example/

https://solidity.readthedocs.io/en/v0.5.0/050-breaking-changes.html#example https://github.com/ethereum/solidity/blob/develop/Changelog.md