command not found.

cd contracts
npm install solc
npm install ethereumjs-testrpc web3@0.20.1

node

Web3 = require('web3')
web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));

code = fs.readFileSync('MyContrat.sol').toString()
solc = require('solc')
compileCode = solc.compile(code)