Keychain: https://www.rpmfind.net/linux/rpm2html/search.php?query=keychain
$ wget -c ftp://195.220.108.108/linux/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/k/keychain-2.8.0-3.fc24.noarch.rpm
$ rpm -i keychain-2.8.0-3.fc24.noarch.rpm
Then edit your ~/.bash_profile
file and append the following line:
$ eval `keychain --agents ssh --eval id_rsa`
$ source ~/.bash_profile
$ Enter your passphrase:
Done!
Note: This will manage only ssh-agent keys, if you need to manage gpg-agents as well remove the --agents ssh
parameter.