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#!/bin/bash
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#
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# yum-cron           This shell script enables the automatic use of YUM
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#
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# Author:       Seth Vidal <skvidal@phy.duke.edu>
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#
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# chkconfig:	- 50 01
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#
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# description:  Enable daily run of yum, a program updater.
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# processname:  yum-cron
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# config: /etc/yum/yum-daily.yum
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#
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# source function library
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. /etc/rc.d/init.d/functions
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test -f /etc/sysconfig/yum-cron && . /etc/sysconfig/yum-cron
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lockfile=/var/lock/subsys/yum-cron
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tslock=/var/lock/yum-cron.lock/ts.lock
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yumcronpid=/var/lock/yum-cron.lock/pidfile
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RETVAL=0
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start() {
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	echo -n $"Enabling nightly yum update: "
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	touch "$lockfile" && success || failure
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	RETVAL=$?
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	echo
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}
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stop() {
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	echo -n $"Disabling nightly yum update: "
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	if [ -f "$yumcronpid" -a "$SERVICE_WAITS" = "yes" ]; then
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	  yum_done=0
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	  if [ ! -f $tslock ]; then
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	    # No transaction yet in progress, just kill it
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	    kill `cat $yumcronpid > /dev/null 2>&1` > /dev/null 2>&1
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	    yum_done=1
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	  fi
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	  if [ $yum_done -eq 0 ]; then
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	    echo -n $"Waiting for yum "
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	    if [ -z "$SERVICE_WAIT_TIME" ]; then
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	      SERVICE_WAIT_TIME=300
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	    fi
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	    start=`date +%s`
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	    end=`expr $start + $SERVICE_WAIT_TIME`
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	    while [ `date +%s` -le $end ]
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	    do
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	      sleep 5
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	      if [ ! -f "$tslock" ]; then
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		yum_done=1
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	        break
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	      fi
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	    done
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	    if [ $yum_done -eq 1 ]; then
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	      echo -n " ok "
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	    else
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	      echo -n " failed "
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	    fi
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	  fi
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	fi
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	rm -f "$lockfile" && success || failure
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	RETVAL=$?
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	echo
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}
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restart() {
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	stop
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	start
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}
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case "$1" in
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  start)
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	start
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	;;
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  stop)
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	stop
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	;;
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  restart|force-reload)
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	restart
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	;;
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  reload)
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	;;
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  condrestart)
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	[ -f "$lockfile" ] && restart
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	;;
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  status)
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	if [ -f $lockfile ]; then
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		echo $"Nightly yum update is enabled."
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		RETVAL=0
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	else
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		echo $"Nightly yum update is disabled."
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		RETVAL=3
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	fi
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	;;
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  *)
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	echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"
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	exit 1
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esac
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exit $RETVAL