Git Bash:ssh-Add Could Not Open A Connection To Your Authentication Agent

Could not open a connection to your authentication agent

To resolve this error:
bash:
$ eval `ssh-agent -s`
tcsh:
$ eval `ssh-agent -c`
Then use ssh-add as you normally would.
Hot Tip:

I was always forgetting what to type for the above ssh-agent commands, so I created an alias in my .bashrc file like this:

alias ssh-agent-cyg='eval `ssh-agent -s`'
Now instead of using ssh-agent, I can use ssh-agent-cyg
E.g.
$ ssh-agent-cyg
SSH_AUTH_SOCK=/tmp/ssh-n16KsxjuTMiM/agent.32394; export SSH_AUTH_SOCK;
SSH_AGENT_PID=32395; export SSH_AGENT_PID;
echo Agent pid 32395;

$ ssh-add ~/.ssh/my_pkOriginal Source of fix:

http://cygwin.com/ml/cygwin/2011-10/msg00313.html