-var-file

• terraform plan -var-file="your_file.tfvars"
• terraform apply -var-file="your_file.tfvars"

Related

• Terraform variables: Error: Reference to undeclared input variable
• -var
• variables.tf

See also

• terraform [untaint | fmt | apply |show | state | init | plan | console | output | validate | destroy | debug | import | providers | get | graph | workspaces | resource | login | -var-file | state mv | state pull | state push | state replace-provider | state rm | force-unlock | env | tfe | --version | remote-exec | delete on termination | deprecated commands | terraform --help]