Running terraform fmt without any flags in a directory with Terraform configuration files will check the formatting of those files without changing their contents.

What command does Terraform require the first time you run it within a configuration directory?

Terra form installs its providers during which phase?

John is writing a module and within the module, there are multiple places where he has to use the same conditional expression but he wants to avoid repeating the same values or expressions multiple times in a configuration,. What is a better approach to dealing with this?

You have to initialize a Terraform backend before it can be configured.