Which command checks if all Terraform configuration code is properly formatted without making changes?

The command that checks if all Terraform configuration code is properly formatted without making changes is "terraform fmt -check -recursive." This command specifically targets the formatting of Terraform configuration files. When the "-check" flag is used, Terraform will evaluate the files for proper formatting and report whether they match the standard formatting rules, but it will not apply any changes to the files themselves. The addition of "-recursive" allows the command to check all configuration files in the specified directory and its subdirectories, ensuring that all files are considered.

The purpose of this command is to help developers maintain code quality and consistency across their Terraform configurations, making it easy to identify files that may not conform to accepted formatting styles without inadvertently altering them. This kind of checks is crucial for collaborative environments where multiple team members may be working on the same codebase.

Other commands, while helpful in their own right, do not serve the same function of formatting checks. For instance, one command is intended for validating configuration syntax and structure (but not formatting), while another may be related to planning changes that would be applied to infrastructure but not formatting checks. Thus, "terraform fmt -check -recursive" is the precise command required for checking formatting without making any modifications.