tflint

• https://github.com/terraform-linters/tflint
• Installation: brew install tflint
• Linux: curl -s https://raw.githubusercontent.com/terraform-linters/tflint/master/install_linux.sh | bash
• Help: tflint --help

Warnings

Warning: variable "cidr_blocks" is declared but not used (terraform_unused_declarations)

  on variables.tf line 11:
  11: variable "cidr_blocks" {

Reference: https://github.com/terraform-linters/tflint-ruleset- terraform/blob/v0.2.2/docs/rules/terraform_unused_declarations.md

Related

• tfsec
• terraform validate

See also

• tflint, tflint --help
• Terraform tools: tfswitch, tfsec, tflint