Stunnel command line example

$ cat /etc/init.d/stunnel

case "$1" in
   start)
       stunnel -d pop3s \ 
               -r localhost:pop3 \ 
               -D mail.notice \ 
               -P /var/run/stunnel.pid \ 
               -s stunuser \ 
               -g stunuser \ 
               -p /etc/stunnel/mail.pem
        ;;

    stop)
        kill `cat /var/run/stunnel.pid`
        ;;

...