simple "ssh audit" to see ssh keys fingerprints authorized on multiple servers at once usage : sshaudit server1 server2

sshaudit

# ssh "audit" : see who accesses what
sshaudit (){
   for server in "$@"; do
      ssh $server -C 'cat ~/.ssh/authorized_keys' | sort | while read line; do
         tmp="$(mktemp)"
         echo "$line" > "$tmp"
         echo $server $(ssh-keygen -lf "$tmp" | cut -d ' ' -f2,4)
         rm -f "$tmp"
      done
   done
}