ssh_agent_startup

# Snippit to put in your ~/.bash_profile.
# This will look for a running ssh-agent process on your machine,
# and connect to it if possible.  Otherwise it will start up a 
# new instance.
# If you ever wanted to put it in your .bashrc (not recommended)
# be sure to delete all print statements.


export SSH_ENV=$HOME/.ssh/environment_${HOSTNAME}

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

# Source SSH settings, if applicable

ssh-add -l > /dev/null 2>&1
if [ $? -eq 0 -o $? -eq 1 ]; then
    echo "SSH Agent found."
else
    echo -n "Looking for SSH Agent... "
    if [ -f "${SSH_ENV}" ]; then
        . ${SSH_ENV} > /dev/null
        ssh-add -l > /dev/null 2>&1
        if [ $? -eq 0 -o $? -eq 1 ]; then
            echo "found pid: ${SSH_AGENT_PID}."
        else
            echo "not found."
            start_agent;
        fi
    else
        start_agent;
    fi
    ssh-add -l
fi