... SSH_ENV="$HOME/.ssh/environment" function start_agent { echo "Initialising new SSH agent..." (umask 066; /usr/bin/ssh-agent > "${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 -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || { start_agent; } else start_agent; fi