[centos]sudoers檔案權限 os版本差異

 ]$ sudo su -
sudo: /etc/sudoers is mode 0600, should be 0440
sudo: no valid sudoers sources found, quitting

不同版本，略有差異
當centos = 6.3
sudoers file mode 440
其餘centos >6.3
sudoers file mode 600

sudoer主檔、與include的file (/etc/sudoers.d/)皆要變更權限