Blockchain By Example

The Truffle console

Now that we've deployed our contracts, let's check that the deployment initialized them as expected. To do this we'll call our deployed contracts directly, and to do this we'll use truffle console, which we can run with the following command:

truffle console --network rinkeby

At the prompt, we can then get a reference to our deployed token contract:

truffle(rinkeby)> PacktToken.deployed().then(function(instance) { tokenInstance = instance; })undefined

And, from here, we can check our public state variables:

truffle(rinkeby)> tokenInstance.name()'Packt ERC20 Token'truffle(rinkeby)> tokenInstance.symbol()'PET'truffle(rinkeby)> tokenInstance.totalSupply().then(function(supply) { tokenSupply = supply; })undefinedtruffle(rinkeby)> ...