terraform.exe is an executable so no much to install
https://www.terraform.io/downloads.html
On Centos 7: https://linoxide.com/devops/install-terraform-provision-aws-ec2-instance/
install terraform
cd /usr/local/src su wget https://releases.hashicorp.com/terraform/0.11.7/terraform_0.11.7_linux_amd64.zip unzip terraform_0.11.7_linux_amd64.zip mv terraform /usr/local/bin/ export PATH=$PATH:/terraform-path/ terraform --version