Adding users and groups, and have sudo privileges
1, add a user group
groupadd dev
2, was added and the home user group dev
useradd -g dev yujuan
3, change the user password
passwd yujuan
4. View Group
cat /etc/group
5, view the user
cat /etc/passwd
6, increase sudo permissions to user groups
sudo vim /etc/sudoers
%dev ALL=(ALL) NOPASSWD:ALL
//免密
%dev ALL=(ALL) ALL
7, to increase user sudo privileges
sudo vim /etc/sudoers
yujuan ALL=(ALL) NOPASSWD:ALL
//免密
yujuan ALL=(ALL) ALL
8, delete users
#如果有sudo权限,记得删除 /etc/sudoers的配置
userdel yujuan
9, delete user group
#如果有sudo权限,记得删除 /etc/sudoers的配置
groupdel dev