add user to sudoers linux code example

Example 1: add user to sudoers

usermod -aG sudo username

Example 2: add sudo user ubuntu

# add a user and set a password
adduser USERNAME

# add user to sudoers / sudo groupe with command below
usermod -aG sudo USERNAME

Example 3: add user with sudoer centos

username ALL=(ALL) NOPASSWD:/usr/bin/du,/usr/bin/ping