ssh-keygen

ssh-keygen [OPTION]...

ssh-keygen -b 4096 -C "USER@HOST"  # Gen key pair
ssh-keygen -l[v] [-E md5] -f PUBKEY  # Print Fingerprint

OPTION
- -b BITS: Key Length
- -C COMMENT: Key Comment
- -F [HOST][:PORT]: List known hosts
- -l: Print pubkey fingerprint
- -E md5: Set fingerprint algorithm to md5 instead of default sha256
- -v: Verbose
- -f KEY: Specify Key
- -t dsa|ecdsa|ecdsa-sk|ed25519|ed25519-sk|rsa: Specify Key Algorithm, default to rsa