bashrc to initialize ssh-agent daemon(if not running) on ssh-login

ssh-agent-bashrc.sh

####SSH-agent setting####
AGENT_INFO="$HOME/.ssh/agent.info"

function start_agent {
     echo "Initializing new SSH agent..."
     /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${AGENT_INFO}"
     chmod 600 "${AGENT_INFO}"
     . "${AGENT_INFO}" > /dev/null
}

# Source SSH settings, if applicable

if [ -f "${AGENT_INFO}" ]; then
     . "${AGENT_INFO}" > /dev/null
     ps -p ${SSH_AGENT_PID} > /dev/null || {
         start_agent;
     }
else
     start_agent;
fi