1. MagicESP
  2. Ubuntu Server 22.04
  3. sudo without password

sudo without password

Synonyms:
  1. Create ubuntu account and sudo without password
  2. Create ubuntu account
  3. create sudo user

Some ubuntu server comes with only root account. I recommend create a ubuntu account for everyday use and use sudo to do root jobs. We do not even need to set and remember any password for the ubuntu account, because we normally login this account using the SSH keys file.

create ubuntu account

sudo adduser --gecos "" --disabled-password ubuntu

sudo without password prompt (using command line)

echo "ubuntu ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/90-cloud-init-users
sudo chmod 0440 /etc/sudoers.d/90-cloud-init-users

sudo without password prompt (using editor)

sudo vim /etc/sudoers.d/90-cloud-init-users

add the following lines

# User rules for ubuntu
ubuntu ALL=(ALL) NOPASSWD:ALL

sudo chmod 0440 /etc/sudoers.d/90-cloud-init-users

how to switch to another user

sudo -u ubuntu -i

run as another user

sudo -u ubuntu whoami