nginx process manager script from http://www.openmymind.net/2010/7/1/Installing-Nginx-with-Passenger-on-Linux

nginx.sh

#!/bin/sh

#This is a start script for nginx. Tested on Unbuntu Edge. 
#Should work on Ubuntu, Debian and probably a few other Linux distros.
#Change DAEMON and CONFIG_FILE  if neccessary
#Copied from: http://www.openmymind.net/2010/7/1/Installing-Nginx-with-Passenger-on-Linux
PATH=/sbin:/bin:/usr/sbin:/usr/bin


DAEMON=/usr/local/nginx/sbin/nginx
CONFIG_FILE=/etc/nginx/nginx.conf


DAEMON_OPTS="-c $CONFIG_FILE"
NAME=nginx
DESC="nginx web server"
PIDFILE=/var/run/$NAME.pid 
SCRIPTNAME=/etc/init.d/$NAME


#only run if binary can be found
test -x $DAEMON || exit 0

set -e

#import init-functions
. /lib/lsb/init-functions

case "$1" in
start)
log_daemon_msg "Starting $DESC" $NAME
if ! start-stop-daemon --start --quiet\
    --pidfile $PIDFILE --exec $DAEMON -- $DAEMON_OPTS ; then
    log_end_msg 1
    else
    log_end_msg 0
fi
;;
stop)
log_daemon_msg "Stopping $DESC" $NAME
if start-stop-daemon --quiet --stop --oknodo --retry 30\
    --pidfile $PIDFILE --exec $DAEMON; then
    rm -f $PIDFILE
    log_end_msg 0
    else
    log_end_msg 1
fi
;;
reload)
log_daemon_msg "Reloading $DESC configuration" $NAME
if start-stop-daemon --stop --signal 2 --oknodo --retry 30\
    --quiet --pidfile $PIDFILE --exec $DAEMON; then
    if start-stop-daemon --start --quiet  \
        --pidfile $PIDFILE --exec $DAEMON -- $DAEMON_OPTS ; then
        log_end_msg 0
        else
        log_end_msg 1
    fi
    else
    log_end_msg 1
fi
;;
restart|force-reload)
$0 stop
sleep 1
$0 start
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
exit 1
;;
esac

exit 0