sshpassとbashのバックアップスクリプトでバグを発見

このスクリプトを使用して、rsyncを介してリモートファイルをバックアップしています。問題は起動しようとしたときに発生し、処理方法が不明なエラーが出力されます。ご提案いただきありがとうございます。

#!/bin/bash
#VARIABLES DEFINE TO STORE COMMANDS AND VALUES.
TODAY_DATE=$(date +%Y%m%d) #Store current date
MKDIR=$(which mkdir)    #store mkdir command
RSYNC=$(which rsync)    #store rsync command
DEL=$(which rm)             #store rm command
TAR=$(which tar)             #store tar command
MAIL=$(which mail)         #store mail command
LOGFILE='/tmp/backup.log' #store path of log file & touch this file in /tmp directory

#ADD EMAIL ID IN MAILTO FOR GETTING NOTIFICATIONS IN MAIL
MAILTO='[email protected]'
BODY="nnFor more information please check $LOGFILE.nnnThanks,n$0"

#CREATE DIRECTORY TO STORE BACKUP FILES
PRODBACKDIR=$TODAY_DATE/var/production-backup/

#IF CONDITION CHECK DIRECTORY IS PRESENT OR NOT AND IF NOT PRESENT CREATE DIRECTORY WITH PROVIDED DIR STRUCTURE.
if [ ! -d "{$PRODBACKDIR}" ] && [ `$MKDIR -p "$PRODBACKDIR"` ];
then
echo -e "Directory Created for site";
fi

#if [ ! -d “{$BLOGBACKDIR}” ] && [ `$MKDIR -p “$BLOGBACKDIR”` ];
#then
#echo -e “Directory Created for Production Blog Codebase”;
#fi

#REMOVE BACKUP FILES 7 DAYS OLDER
find /var/production-backup/ -mtime +7 -exec rm -rf {} ;

#RSYNC COMMAND  TO SYNC CODE OR DATA FROM REMOTE SERVER TO LOCAL USING SSHPASS TO PASS PASSWORD OF REMOTE SERVER
sshpass -p 'password' rsync –progress -rPz -e ssh backups@remotehost:/var/www/website $PRODBACKDIR

#FOR LOOP TO CHECK BACKUP FILES AND COMPRESSED IT WITH .TAR.GZ FILE WHICH SAVES DISK SPACE ON LOCAL SYSTEM AND ALSO REMOVE NON COMPRESSED FILES.
for DOC in $PRODBACKDIR; do
echo "`date '+%Y-%m-%d'` : ${DOC} backup started";
if [ -d ${DOC} ]; then
          FILENAME=$(echo $DOC | awk -F '/' '{print $NF}');
          TARFILE="$FILENAME-$TODAY_DATE.tar.gz";
          echo "`date '+%Y-%m-%d'` : ${DOC} archiving started.";
          $TAR -cvzf $PRODBACKDIR/$TARFILE $PRODBACKDIR/$FILENAME;

#IF CONDITION CHECK ERRORS WHILE CREATING TAR.GZ AND REPORT IF TAR COMMAND FAILS.
if [ $? -eq 0 ]; then
                       echo "`date '+%Y-%m-%d'` : ${DOC} archiving done."
                       $DEL -rf $PRODBACKDIR/$FILENAME
                       echo "`date '+%Y-%m-%d'` : ${DOC} deleting of non-archive directory done."
               else
                       echo "Error while creating tar."
                       echo -e "Error while creating tar file.$BODY" | $MAIL -s 'Error : Creating tar file' $MAILTO
                       exit 1
               fi
       fi
       echo "`date '+%Y-%m-%d %H:%M:%S'` : ${DOC} backup completed"
done


#SEND THE NOTIFICATION EMAIL AFTER SUCCESSFUL COMPLETION OF BACKUP.
echo -e "Backups successfully done for Production codebase" | $MAIL -s "Completed : Backup finished." $MAILTO

間違い：

find: missing argument to `-exec'
Try 'find --help' for more information.
Unexpected remote arg: backups@remotehost:/var/www/website
rsync error: syntax or usage error (code 1) at main.c(1361) [sender=3.1.2]
2018-08-02 : 20180802/var/production-backup/ backup started
2018-08-02 : 20180802/var/production-backup/ archiving started.
20180802/var/production-backup/
2018-08-02 : 20180802/var/production-backup/ archiving done.
2018-08-02 : 20180802/var/production-backup/ deleting of non-archive directory d                                                                                                                               one.
2018-08-02 06:58:59 : 20180802/var/production-backup/ backup completed