Welcome to block chain technology!!
Everything about Block Chain [a link] https://blockgeeks.com/guides/what-is-blockchain-technology/
Ethereum:- [a link ] https://blockgeeks.com/guides/ethereum/
Smart Contracts: [a link] https://blockgeeks.com/guides/smart-contracts/
Solidity:
[a link] http://solidity.readthedocs.io/en/v0.4.20/
web3.js :
[a link] https://web3js.readthedocs.io/en/1.0/
nodeJS : [a link] https://www.w3schools.com/nodejs/default.asp
Follow the steps: step 1 : download gitbash for easy installation of packages required mkdir Remix_tool //create a directory called Remix_tool cd Remix_tool //change directory to Remix_tool git clone https://github.com/ethereum/browser-solidity //downloading solidity browser Install npm: sudo apt-get install nodejs //installing node.js sudo apt-get install npm // installing Node Package Manager sudo ln -s /usr/bin/nodejs /usr/bin/node //Create a symbolic link for node cd browser-solidity npm install npm run prepublish
step 2: clone the project and open the folder in gitbash now u need to install the packages , for that "npm install yarn" & "yarn init" commands are used install nodemon local server ("npm install nodemon")
step 3: run the solidity code in remix IDE and copy the ABI & contract Address and paste then in app.js now in the console run the server (nodemon app.js) open the browser and follow the link (http://127.0.0.1:3000/account)
Private Block Chain:
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Install geth cli windows (download the .exe file from official site and install) ubuntu : Follow the commands: 1. sudo apt-get install software-properties-common 2. sudo add-apt-repository -y ppa:ethereum/ethereum 3. sudo apt-get update 4. sudo apt-get install ethereum
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Open your gitbash and init the genesis file : geth --datadir "chain1" init "genesis.json"
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Run the geth console in "8545" rpc port, geth --datadir "chain1" --port 30303 --networkid 1234 --rpc --rpcport "8545" --rpccorsdomain "*" console 2>console.log create few accounts personal.newAccount() //parsephrase (password) eth.setEtherbase(personal.listAccounts[0]) start mining miner.start(4) //parameter indicates no. of threads for mining
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Inthe remix IDE change the environment to web3 provider frrom javaScript