Check for existing SSH keys
Run:
$ ls -al ~/.ssh
If SSH keys exist you should see something like:
-rw------- 1 username username 464 Aug 30 18:47 id_ed25519
-rw-r--r-- 1 username username 97 Aug 30 18:47 id_ed25519.pub
-rw-r--r-- 1 username username 1474 Jan 26 21:11 known_hosts
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