The best way I can think of to let it die off would be to specifically answer the OP's question (even though we've established that it's a Very Bad Idea)

Add the following line to /etc/sudoers (using visudo of course):

(assuming the intended user is "localuser" as implied by the language in OP, and 'which cat' returns '/usr/bin/cat')

localuser ALL:/usr/bin/cat /etc/shadow

On Mon, Sep 24, 2018 at 2:58 PM William Roberts <bill.c.roberts@gmail.com> wrote:

With that said, I was going to let it die with Frank's response, but I can see folks
will keep at it. Just let it die. It's an off topic question related with how linux permissions
work not with the audit subsystem.