Latest pg_autovacuum script

Hi,
        I have updated the pg_autovacuum script with some bug fixes and changes. Hope you find this useful.

-- This goes where all the other init scripts are located.
-- Can be placed at the top of /etc/rc.d/init.d/postgresql script or in the /etc/sysconfig/pgsql/{name of script} e.g. postgresql, pg1, pg2

# Initialize pg_autovacuum defaults. Theo Galanakis 11/04/2005
PGAUTO_LOGFILE=/var/log/pg_autovacuum.{$PGPORT}.log
PGAUTO_SLEEP=600

--Include at the top of /etc/rc.d/init.d/postgresql
# pg_autovaccum Include script file. Theo Galanakis 11/04/2005
. $INITD/autovacuum

--Update case statement in postgresql script
case "$1" in
  start)
        start
        startautovacuum
        ;;
  stop)
        stop
        stopautovacuum
        ;;
  status)
        status postmaster
        statusautovacuum
        ;;
  restart)
        restart
        restartautovacuum
        ;;

--Create a new file /etc/rc.d/init.d/autovacuum with this content.
startautovacuum() {
        # Start pg_autovacuum. Theo Galanakis 11/05/2005
        # Note : ensure $PGENGINE is being used in script otherwise hardcode to /usr/bin/
        if [ -f /var/run/pg_autovacuum.${PGPORT}.pid ]
        then
                echo $"pg_autovacuum already running."
        else
                PAUTO_START=$"Starting pg_autovacuum service: "
                echo -n "$PAUTO_START"
                pg_autovacuum -D -s ${PGAUTO_SLEEP} -p ${PGPORT} -U postgres -L ${PGAUTO_LOGFILE}
                sleep 1
                pg_autovacuum_pid=`pidof -s $PGENGINE/pg_autovacuum`
                if [ $pg_autovacuum_pid ]
                then
                   success "$PAUTO_START"
                   echo $pg_autovacuum_pid > /var/run/pg_autovacuum.${PGPORT}.pid
                   echo
                else
                   failure "$PAUTO_START"
                   echo
                fi
        fi
}

stopautovacuum () {
        # Stop pg_autovaccum. Theo Galanakis 11/04/2005
        if [ -f /var/run/pg_autovacuum.${PGPORT}.pid ]
        then
                pg_autovacuum_pid=`head -n 1 /var/run/pg_autovacuum.${PGPORT}.pid`
                ret=`ps --no-heading ${pg_autovacuum_pid}`
                if [ -z "$ret" ]
                then
                        echo $"pg_autovacuum: pid [${pg_autovacuum_pid}] stored in /var/run/pg_autovacuum.${PGPORT}.pid does not exist."

                else
                        echo -n $"Stopping pg_autovacuum service: "

                        kill -TERM $pg_autovacuum_pid
                        ret=`ps --no-heading ${pg_autovacuum_pid}`
                        if [ -z "$ret" ]
                        then
                                echo_success
                        else
                                echo_failure
                        fi
                        echo
                        rm -f /var/run/pg_autovacuum.${PGPORT}.pid
                fi
        else
                echo $"pg_autovacuum is not running."
        fi     
}

statusautovacuum() {
        # Status pg_autovacuum. Theo Galanakis 11/04/2005
        if [ -f /var/run/pg_autovacuum.${PGPORT}.pid ]
        then
                pg_autovacuum_pid=`head -n 1 /var/run/pg_autovacuum.${PGPORT}.pid`
                ret=`ps --no-heading ${pg_autovacuum_pid}`
                if [ -z "$ret" ]
                then
                        echo $"pg_autovacuum not running..."
                else
                        echo $"pg_autovacuum (pid ${pg_autovacuum_pid}) is running..."
                fi
        else
                status pg_autovacuum
        fi
}

restartautovacuum() {
   stopautovacuum
   startautovacuum
}