nginx自动启动脚本几段代码

#! /bin/sh
# Author: WJ-Cody
# Reproduced with express authorization from its contributors
set -e
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=nginx
DAEMON=/usr/local/nginx/sbin/nginx
SCRIPTNAME=/etc/init.d/nginx
PID=/home/weblogs/nginx.pid
CONF=/usr/local/nginx/conf/nginx.conf

# If the daemon file is not found, terminate the script.
test -x $DAEMON || exit 0

d_start() {
  $DAEMON || echo -n "nginx already running"
}

d_stop() {
  kill -INT `cat $PID` || echo -n "nginx not running"
}

d_reload() {
  kill -HUP `cat $PID` || echo -n "nginx could not reload"
}

case "$1" in
  start)
    echo -n "Starting $NAME"
    d_start
    echo "."
  ;;
  stop)
    echo -n "Stopping $NAME"
    d_stop
    echo "."
  ;;
  reload)
    echo -n "Reloading configuration..."
    d_reload
    echo "reloaded."
  ;;
  restart)
  echo -n "Restarting $NAME"
  d_stop
# Sleep for two seconds before starting again, this should give the
# Nginx daemon some time to perform a graceful stop.
  sleep 2
  d_start
  echo "."
  ;;
  *)
  echo "Usage: $SCRIPTNAME {start|stop|restart|reload}" >&2
  exit 3
  ;;
esac
exit 0

# sudo chmod +x /etc/init.d/nginx

# sudo chkconfig --list
# sudo chkconfig nginx defaults
# sudo chkconfig --list
结果如下：
nginx    0:off   1:off   2:on    3:on    4:on    5:on    6:off