当一台服务器上有很多侦听时，如何用脚本一次起动

#!/usr/bin/sh
#############################################
#
#  Start the tnslistener
#
#############################################
start_tnslstnr()
{
echo $(date) "Start TNSLISTENER $oraid"

oraidlitener= cat $oraidlitener | grep -v "SID_LIST" |grep -v ")"
grep -v "^#" $oraidlitener | while read line
  do
    echo $line | grep -q "(" 
    if [ $? -eq 0 ]
      then
      echo $line
      break
    fi  
    echo $line | grep -q "=" 
    if [ $? -eq 0 ]
      then
      LISTENER=$(echo $line | cut -f 1 -d '=')
      echo "$oraid's listener name is $LISTENER"
      su - $oraid -c 'lsnrctl start $LISTENER & wait' >/dev/null 2>&1 0</dev/null
      su - $oraid -c 'lsnrctl status $LISTENER' 2>&1 0</dev/null
      RC=$?
      if [ $RC -eq 0 ]
         then 
         echo $(date) "DONE : Start TNSLISTENER $oraid"
         echo $(date) "----------------------------------------------------------"
      else
        echo "-----------------------------------------------------------------"
        echo $(date) "WARNING: Start TNSLISTENER $oraid RC="$RC
        echo $(date) "##########################################################"
        listenererror=y
       echo "-----------------------------------------------------------------"
      fi
      echo "\n"
      echo "\n"
    fi  
  done
  return 0
}
#############################################
#
#  Main 
#
#############################################
oraids=$(cat /etc/group|grep -i dba|cut -d ':' -f 4)
oraids=$(echo $oraids |tr "," " ")
for oraid in $oraids
  do  
    echo "oracle $oraid is found and trying to found listener file";
    oraidlitener=$(find / -name listener.ora|grep -v sample|grep -i $oraid);
    echo $oraid;
    echo $oraidlitener;
    start_tnslstnr;
  done