yum install -y bash-completion
locate bash_completion
echo "source /usr/share/bash-completion/bash_completion" >> /etc/profile
echo "source <(kubectl completion bash)" >> /etc/profile
若要马上生效,直接执行 source 的命令而不是添加到文件里面
echo "source <(helm completion bash)" >> /etc/profile
原文:https://www.cnblogs.com/UncleZhao/p/14646140.html