Ethereum Cookbook

How to do it...

1. Consider the following smart contract, HelloWorld.sol, as an example:

pragma solidity ^0.4.22;contract HelloWorld {        string public greeting = "Hello World";        event greetingChanged(address by, string greeting);        function changeGreeting(string _newGreeting) public {        greeting = _newGreeting;        emit greetingChanged(msg.sender, _newGreeting);    }    }

2. Verify your solc installation with the following command. It will show you all the parameters supported by the compiler:

$ solc --help

3. For deploying and interaction, we need the ABI and binary of a smart contract. Use the --abi and --bin flags to generate them using the solc compiler:

$ solc --bin --abi HelloWorld.sol

4. Compiling the contract with --bin and --abi will produce an output ...