The [sudoers.d] subdirectory contains sudoers(5) configuration
fragments in files that can be put into the /etc/sudoers.d/ file
on most Linux and other Unix distributions to change the behaviour
of the sudo(1) command.
We also provide an [install-sudoers] command that makes it easy to
install these (or any other) sudoers files into /etc/sudoers.d/.
It uses visudo to do this so that the file syntax is checked and the
permissions are set correctly.