tldr/pages/common/ssh-keygen.md

ssh-keygen

Generate ssh keys user for authentication, password-less logins, and other things.

• Generate a key interactively:

ssh-keygen

• Specify file in which to save the key:

ssh-keygen -f ~/.ssh/{{filename}}

• Generate a DSA 2048 bit (default) key:

ssh-keygen -t dsa

• Generate an RSA 4096 bit key with your email as a comment:

ssh-keygen -t rsa -b 4096 -C "{{email}}"

• Retrieve the key fingerprint from a host (useful for confirming the authenticity of the host when first connecting to it via SSH):

ssh-keygen -l -F {{remote_host}}