To run the test node:
npx hardhat node
To deploy contracts (specify network):
npx hardhat run scripts/<deployment script> --network <network - e.g. localhost>
To verify contracts:
npx hardhat verify --network <network - e.g. kovan> --constructor-args etherscan-<args file suffix>.js <contract address>
To run test app:
npm run dev
Other useful commands:
npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
npx hardhat help