# generate the key
ssh-keygen -t rsa
# Generating public/private rsa key pair.
# Enter file in which to save the key (/demo/.ssh/id_rsa):
# Enter passphrase (empty for no passphrase):
# Enter same passphrase again:
# Your identification has been saved in /demo/.ssh/id_rsa.
# Your public key has been saved in /demo/.ssh/id_rsa.pub.
# The key fingerprint is:
# 4a:dd:0a:c6:35:4e:3f:ed:27:38:8c:74:44:4d:93:67 demo@a
# The key's randomart image is:
# +--[ RSA 2048]----+
# | .oo. |
# | . o.E |
# | + . o |
# | . = = . |
# | = S = . |
# | o + = + |
# | . o + o . |
# | . o |
# | |
# +-----------------+
# show the key
cat ~/.ssh/id_rsa.pub
# connect
ssh root@[your.ip.address.here]
# more info: https://www.digitalocean.com/community/tutorials/how-to-use-ssh-keys-with-digitalocean-droplets