Identity

Property	Value
Binary	`ssh-keygen`
Config	`~/.ssh/config`, `~/.ssh/authorized_keys`, `~/.ssh/known_hosts`
Logs	No persistent logs — output to terminal
Type	CLI tool
Install	`apt install openssh-client` / `dnf install openssh-clients` (pre-installed)

Key Operations

Task	Command
Generate Ed25519 keypair (preferred)	`ssh-keygen -t ed25519 -C "user@host" -f ~/.ssh/id_ed25519`
Generate RSA keypair (4096-bit, legacy compat)	`ssh-keygen -t rsa -b 4096 -C "user@host" -f ~/.ssh/id_rsa`
Generate without passphrase (automation)	`ssh-keygen -t ed25519 -N "" -f /etc/myapp/ssh_key`
Show key fingerprint	`ssh-keygen -l -f ~/.ssh/id_ed25519`
Show fingerprint in SHA256 (default)	`ssh-keygen -l -E sha256 -f ~/.ssh/id_ed25519`

Related skills