install kubectl version 1.19.3 on linux code example

Example: install kubectl

curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl"
chmod +x ./kubectl
sudo mv ./kubectl /usr/bin/kubectl # you can replace /usr/bin for some dir in your PATH