创建新用户

adduser centos

为新用户初始化密码

passwd centos

授权sudoers

whereis sudoers
ls -l /etc/sudoers
chmod -v u+w /etc/sudoers

修改&编辑sudoers

vim /etc/sudoers
# 找到一下这个地方添加一条即可 centos centos  ALL=(ALL)       ALL
## Allow root to run any commands anywhere 
root    ALL=(ALL)       ALL
centos  ALL=(ALL)       ALL
#centos  ALL=(ALL)       NOPASSWD:ALL

回收权限

chmod -v u-w /etc/sudoers