linux - How do I edit /etc/sudoers from a script?

Question

I need to edit /etc/sudoers from a script to add/remove stuff from white lists.

Assuming I have a command that would work on a normal file, how could I apply it to /etc/sudoers?

Can I copy and modify it, then have visudo replace the original with the modified copy? By providing my own script in $EDITOR?

Or can I just use the same locks and cp?

The question is more about potential issues than about just finding something that works.

Answer 1

Old thread, but what about:

echo 'foobar ALL=(ALL:ALL) ALL' | sudo EDITOR='tee -a' visudo