? ~ echo "/opt/nfs 10.10.10.*(rw,all_squash,sync)">>/etc/exports
zsh: permission denied: /etc/exports
解决办法：
1）sudo sh -c ‘ echo "/opt/nfs 10.10.10.*(rw,all_squash,sync)" >> /etc/exports’
2）echo "/opt/nfs 10.10.10.*(rw,all_squash,sync)" |sudo tee /etc/exports
echo "/opt/nfs 10.10.10.*(rw,all_squash,sync)" |sudo tee -a /etc/exports -a：append 追加
3）提升权限
避免 ‘sudo echo xxxx >’ 时候 出现 “permission denied”
原文：https://www.cnblogs.com/liyongjian5179/p/9884978.html
