Install keychain by entering the following commands in the terminal:
sudo apt update sudo apt install keychain
Description:
key manager for OpenSSH
Keychain is an OpenSSH key manager, typically run from ~/.bash_profile. When keychain is run, it checks for a running ssh-agent, otherwise it starts one. It saves the ssh-agent environment variables to ~/.keychain/\$\{HOSTNAME\}-sh, so that subsequent logins and non-interactive shells such as cron jobs can source the file and make passwordless ssh connections. In addition, when keychain runs, it verifies that the key files specified on the command-line are known to ssh-agent, otherwise it loads them, prompting you for a password if necessary.
Homepage: http://www.funtoo.org/Keychain
Version: 2.8.2-0.1
Section: universe/net