initialize

terraform init

preview terraform actions

terraform plan

apply configuration with variables

terraform apply -var-file terraform-dev.tfvars

destroy a single resource

terraform destroy -target aws_vpc.myapp-vpc

destroy everything fromtf files

terraform destroy

show resources and components from current state

terraform state list

show current state of a specific resource/data

terraform state show aws_vpc.myapp-vpc    

set avail_zone as custom tf environment variable - before apply

export TF_VAR_avail_zone="eu-west-3a"