SHELL

sudo passwordless

# Edit the sudoers with the visudo command
sudo visudo

# Change the %sudo group to be password-less
%sudo   ALL=(ALL:ALL) NOPASSWD: ALL

# Press CTRL+X to exit
# Press Y to save
# Press Enter to confirm

ubuntu passwordless sudo

sudo vim /etc/sudoers
# Find `includedir /etc/sudoers.d` usually last line of file
username ALL=(ALL) NOPASSWD: ALL