Does this help:
https://askubuntu.com/questions/159007/how-do-i-run-specific-sudo-commands-without-a-password
Cheers but I think it was attempting to follow that that ended up with me corrupting my sudoers file and having to boot into recovery to repair it.
@aggi started
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Does this help:
https://askubuntu.com/questions/159007/how-do-i-run-specific-sudo-commands-without-a-password