gpg-agent forwarding over SSH, the remote SSH server needs to enable
"StreamLocalBindUnlink yes" in the global /etc/ssh/sshd_config. It may
happen that this file is not adjustable by the user.
The wrapper 'gssh' detects the correct socket and enables gpg-agent
forwarding when the user explicit wants to forward the gpg-agent.
See more: https://wiki.gnupg.org/AgentForwarding and
The code was written by Callan Bryant: https://github.com/naggie/dotfiles
thanks for sharing under MIT License.
