Add user to sudo

NOTE

Maybe you’ve come to this note because sudo is not found. By default sudo is not installed on Debian, but you can install it with:

su -
apt install sudo

Add to sudo group

su -
usermod -aG sudo USERNAME

Edit the sudoers file

1. Run visudo
2. And then add:

USERNAME  ALL=(ALL) NOPASSWD:ALL

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Relevant Note(s): Linux Basics