gpsd.init

很好的一个gps daemon驱动,简单实用

#!/bin/bash
#
# gpsd	This shell script starts and stops gpsd.
#
# chkconfig: 345 90 40
# description: Gpsd manages access to a serial- or USB-connected GPS
# processname: gpsd

# If you must specify a non-NMEA driver, uncomment and modify the next line
#GPSD_OPTS=

# Source function library.
. /etc/rc.d/init.d/functions

RETVAL=0
prog="gpsd"

start() {
	# Start daemons.
	echo -n "Starting $prog: "
	# We don't use the daemon function here because of a known bug
	# in initlog -- it spuriously returns a nonzero status when 
	# starting daemons that fork themselves.  See
	# http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=130629
	# for discussion.  Fortunately:
	#
	# 1. gpsd startup can't fail, or at least not in the absence of
	# much larger resource-exhaustion problems that would be very obvious.
	#
	# 2. We don't need all the logging crud that daemon/initlog sets
	# up -- gpsd does its own syslog calls.
	#
	if [ -e "/dev/gps" ]
	then
	    gpsd ${GPSD_OPTS} -p /dev/gps
	    success
	else
	    # User needs to symlink /dev/gps to the right thing
	    failure "No /dev/gps device, aborting gpsd startup."
	fi
	RETVAL=$?
	echo
	[ $RETVAL -eq 0 ] && touch /var/lock/subsys/gpsd
	return $RETVAL
}

stop() {
	# Stop daemons.
	echo -n "Shutting down $prog: "
        killproc gpsd
	RETVAL=$?
	echo
	if [ $RETVAL -eq 0 ]
	then
	    rm -f /var/lock/subsys/gpsd;
	fi
	return $RETVAL
}

# See how we were called.
case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart|reload)
	stop
	start
	RETVAL=$?
	;;
  condrestart)
	if [ -f /var/lock/subsys/gpsd ]; then
	    stop
	    start
	    RETVAL=$?
	fi
	;;
  status)
	status gpsd
	RETVAL=$?
	;;
  *)
	echo "Usage: $0 {start|stop|restart|condrestart|status}"
	exit 1
esac

exit $RETVAL