ssh-agent w/gnome-keyring

check

.xprofile

git credential

sudo apt-get install libgnome-keyring-dev
cd /usr/share/doc/git/contrib/credential/gnome-keyring
sudo make
git config --global credential.helper /usr/share/doc/git/contrib/credential/gnome-keyring/git-credential-gnome-keyring

funcions for .profile and rc files

    SSH_ENV="$HOME/.ssh/environment"

    function start_agent {
        echo "Initialising new SSH agent..."
        /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
        echo succeeded
        chmod 600 "${SSH_ENV}"
        . "${SSH_ENV}" > /dev/null
        /usr/bin/ssh-add;
    }

    # Source SSH settings, if applicable

    if [ -f "${SSH_ENV}" ]; then
        . "${SSH_ENV}" > /dev/null
        #ps ${SSH_AGENT_PID} doesn't work under cywgin
        ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
            start_agent;
        }
    else
        start_agent;
    fi