ssh-agent-keys.sh

SSH_ENV=$HOME/.ssh/environment
function start_agent {
    /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}";
    chmod 600 "${SSH_ENV}"
    . "${SSH_ENV}" > /dev/null
    adding_keys
}

function adding_keys {
for possiblekey in ${HOME}/.ssh/*; do
    if grep -q PRIVATE "$possiblekey"; then
	ssh-add -l | grep -q `ssh-keygen -lf "$possiblekey"  | awk '{print $2}'` || ssh-add  "$possiblekey" > /dev/null 2>&1
    fi
done
 
}

if [ -f "${SSH_ENV}" ]; then
     . "${SSH_ENV}" > /dev/null
     ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
        rm "${SSH_ENV}";
        start_agent;
    }
else
    start_agent;
fi