> For the complete documentation index, see [llms.txt](https://rubyprototcol.gitbook.io/ruby-connect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rubyprototcol.gitbook.io/ruby-connect/developer-docs/truffle-deployment-guide.md).

# Truffle Deployment Guide

## Environment Setup

0\. Check whether you Mac has Homebrew installed:

If the command fails, then install Homebrew:

/bin/bash -c "$(curl -fsSL <https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh>)"

1\. sudo apt install nodejs npm

2\. Install OpenZeppelin contracts. At the root of this project.

npm install openzeppelin-solidity

3\. Replace the `mnemonic` variable content with YOUR secret words in `truffle.js`.(NOTE: your secret words should be held privately in your wallet)

var mnemonic = YOUR\_SECRET\_WORDS\_HERE;

4\. Deploy the contract to the Optimism-Goerli network

truffle migrate --reset --network Optimism

5\. From the output of the above command, find the address of the `RubyETH` contract, suppose it is:

`0x05149A02DC230588964Dd6D6F196eF38d523c0Fa`

Update the Javascript code with the above address in `src/rubyClient.js`

rubyApp.contracts.rubyETHContract = new rubyApp.web3.eth.Contract(rubyETHabi, YOUR\_RUBYETH\_CONTRACT\_ADDRESS\_HERE);