shell之备份+判断是否传输完成

#!/bin/bash
#by LC
#DIR=/root
DIR=/server/scripts
YUANFILE=hins423437.tar.gz
BAKFILE=hins423437_xtra_20.*.tar.gz
LC (){
  if [ `ls -l $DIR|grep "${BAKFILE}"|wc -l` -eq 1 ]
  then 
    DUYUAN=`ls -l $DIR|grep "${YUANFILE}"|awk ‘{print $5}‘`
    DUBAK=`ls -l $DIR|grep "${BAKFILE}"|awk ‘{print $5}‘`
    if [ ${DUBAK} -gt ${DUYUAN} ]
    then 
      echo "$(date +%F_%H-%M-%S)===wait===" &>>/server/logs/hyerp_bak.log
      #sleep 10
      sleep 30
      if [ `ls -l $DIR|grep "${BAKFILE}"|awk ‘{print $5}‘` -eq ${DUBAK} ]
      then
        /bin/sh /root/alirds.sh &>/server/logs/rds_bak.log
        echo "$(date +%F_%H-%M-%S)====ok====" &>>/server/logs/hyerp_bak.log
        return
      else
        echo "$(date +%F_%H-%M-%S)====No transfer====" &>>/server/logs/hyerp_bak.log
        #sleep 3
        sleep 60
        LC
      fi
    else
      echo "$(date +%F_%H-%M-%S)====No transfer is completed===" &>>/server/logs/hyerp_bak.log
      #sleep 3
      sleep 60
      LC
    fi 
  else
    echo "$(date +%F_%H-%M-%S)===cant find===" &>>/server/logs/hyerp_bak.log
    sleep 300
    LC
  fi
}
main (){
  LC
  echo "$(date +%F_%H-%M-%S)====MAIN====" &>>/server/logs/hyerp_bak.log
}
main