k8s kubectl命令补全：kubectl completion bash

k8s 命令自动补全 

# redhat系
yum install -y bash-completion
# debian系
apt install -y bash-completion

source /usr/share/bash-completion/bash_completion

source <(kubectl completion bash)

echo "source <(kubectl completion bash)" >> ~/.bashrc

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参考链接：
https://kubernetes.io/zh-cn/docs/tasks/tools/included/optional-kubectl-configs-bash-linux/
https://i4t.com/3245.html