linux 配置k8s 自动补全

k8s 命令自动补全 
yum install -y bash-completion
source /usr/share/bash-completion/bash_completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> ~/.bashrc

查看nginx找指定版本号

version=nginx
curl https://registry.hub.docker.com/v1/repositories/${version}/tags| tr -d '[[]" ]' | tr '}' ' '| awk -F: -v image=${version} '{if(NR!=NF && $3 != ""){printf("%s:%s ",image,$3)}}'