nginx启动脚本，更改自nginx deb包，替换原来的init-nginx-script

nginx-init-script

#!/bin/sh

### BEGIN INIT INFO
# Provides:	  nginx
# Required-Start:    $local_fs $remote_fs $network $syslog $named
# Required-Stop:     $local_fs $remote_fs $network $syslog $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the nginx web server
# Description:       starts nginx using start-stop-daemon
### END INIT INFO

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/opt/nginx/sbin/nginx
NAME=nginx
DESC=nginx

# Include nginx defaults if available
if [ -f /etc/default/nginx ]; then
	. /etc/default/nginx
fi

test -x $DAEMON || exit 0

set -e

. /lib/lsb/init-functions

# PID=$(awk -F'[ \t;]+' '/[^#]pid/ {print $2}' /etc/nginx/nginx.conf)
PID=/opt/nginx/logs/nginx.pid

if [ -z "$PID" ]
then
  PID=/run/nginx.pid
fi

# Check if the ULIMIT is set in /etc/default/nginx
if [ -n "$ULIMIT" ]; then
  # Set the ulimits
  ulimit $ULIMIT
fi

test_nginx_config() {
		$DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
		retvar=$?
		if [ $retvar -ne 0 ]
		then
			exit $retvar
		fi
}

start() {
		start-stop-daemon --start --quiet --pidfile $PID \
			--retry 5 --exec $DAEMON --oknodo -- $DAEMON_OPTS
}

stop() {
		start-stop-daemon --stop --quiet --pidfile $PID \
			--retry 5 --oknodo --exec $DAEMON
}

case "$1" in
	start)
		test_nginx_config
		log_daemon_msg "Starting $DESC" "$NAME"
		start
		log_end_msg $?
		;;

	stop)
		log_daemon_msg "Stopping $DESC" "$NAME"
		stop
		log_end_msg $?
		;;

	restart|force-reload)
		test_nginx_config
		log_daemon_msg "Restarting $DESC" "$NAME"
		stop
		sleep 1
		start
		log_end_msg $?
		;;

	reload)
		test_nginx_config
		log_daemon_msg "Reloading $DESC configuration" "$NAME"
		start-stop-daemon --stop --signal HUP --quiet --pidfile $PID \
			--oknodo --exec $DAEMON
		log_end_msg $?
		;;

	configtest|testconfig)
		log_daemon_msg "Testing $DESC configuration"
		if test_nginx_config; then
			log_daemon_msg "$NAME"
		else
			exit $?
		fi
		log_end_msg $?
		;;

	status)
		status_of_proc -p $PID "$DAEMON" nginx
		;;

	*)
		echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest}" >&2
		exit 1
		;;
esac

exit 0