SSH Key

Since 5.x has gone to shared key only when a shared key exists, I need to consolidate my authorized keys. Is it possible to combine keys into 1 file to import for a single user. I have a basic single user with full rights and 5 keys I need to import. I was thinking a simple :

cat key1.pub >> combined.pub
cat key2.pub >> combined.pub
cat key3.pub >> combined.pub
cat key4.pub >> combined.pub
cat key5.pub >> combined.pub

would that work? I don’t have any lab equipment right now as my customers bought up all my inventory (great problem to have I know) otherwise I would test it myself.

thanks in advance!