Template:Krew installation

• macOS: brew install krew
• Linux: https://krew.sigs.k8s.io/docs/user-guide/setup/install/

(
 set -x; cd "$(mktemp -d)" &&
 OS="$(uname | tr '[:upper:]' '[:lower:]')" &&
 ARCH="$(uname -m | sed -e 's/x86_64/amd64/' -e 's/\(arm\)\(64\)\?.*/\1\2/' -e 's/aarch64$/arm64/')" &&
 KREW="krew-${OS}_${ARCH}" &&
 curl -fsSLO "https://github.com/kubernetes-sigs/krew/releases/latest/download/${KREW}.tar.gz" &&
 tar zxvf "${KREW}.tar.gz" &&
 ./"${KREW}" install krew
)