ssh-add
Add SSH private keys to authentication agent
TLDR
Add the default SSH keys in ~/.ssh to the ssh-agent
$ ssh-add
Add a specific key to the ssh-agent
$ ssh-add [path/to/private_key]
List fingerprints of currently loaded keys
$ ssh-add -l
Delete a key from the ssh-agent
$ ssh-add -d [path/to/private_key]
Delete all currently loaded keys from the ssh-agent
$ ssh-add -D
Add a key to the ssh-agent and the keychain
$ ssh-add -K [path/to/private_key]
SYNOPSIS
ssh-add [options] [file ...]
PARAMETERS
-l
List fingerprints of loaded keys
-L
List public keys of loaded keys
-d
Remove key from agent
-D
Remove all keys
-t LIFE
Set key lifetime
-x
Lock agent with password
-X
Unlock agent
-K
Add keys to macOS keychain
DESCRIPTION
ssh-add adds private key identities to the SSH authentication agent. Once a key is added, it can be used for authentication without entering the passphrase again until the agent is stopped or the key is removed.
CAVEATS
Requires ssh-agent running. Default adds ~/.ssh/id_*. Keys persist until agent stops or explicit removal.
SEE ALSO
ssh-agent(1), ssh(1), ssh-keygen(1)
