delete_logs_send_email.sh

#!/bin/bash
now=$(date)
BACKUPS_DIR="/location where my backup log files are stored"

# create log file
touch $BACKUPS_DIR/backup_delete.log
echo "Date: $now" > $BACKUPS_DIR/backup_delete.log

# declare static Array of file names 
file_names=('backup_*.tgz' 'backup_file2*.log' 'log_file*.log')

# deletes files found in the backup directory (BACKUPS_DIR) but not deeper (-maxdepth 1) 
# with the last modified time of over 30 days ago (-mtime +30) and a name which 
# matches the pattern of the filename from the file_names array.
for filename in "${file_names[@]}";
do 
    echo $filename
    # check if the backup files exit in the backup directory 
    if ls $BACKUPS_DIR/$filename &> /dev/null
    then
        echo "backup files exit"
        # check if backup files older than 30 days exit than delete them
        if find $BACKUPS_DIR -maxdepth 1 -mtime +30 -name $filename -ls &> /dev/null
        then
            # File exit. Now delete backups files that are older than 30 days
            echo "The following backup file was deleted" >> $BACKUPS_DIR/backup_delete.log
            find $BACKUPS_DIR -maxdepth 1 -mtime +30 -name $filename -ls >> $BACKUPS_DIR/backup_delete.log
            # delete those files
            find $BACKUPS_DIR -maxdepth 1 -mtime +30 -name $filename -delete
        else
            echo  "There are no" $filename "files older than 30 days in" $BACKUPS_DIR &>> $BACKUPS_DIR/backup_delete.log
            # send email notification
            mail -s "Backup Logs" email@example.com < $BACKUPS_DIR/backup_delete.log
        fi
    else
        echo  "No" $filename "files found in" $BACKUPS_DIR >> $BACKUPS_DIR/backup_delete.log
        # send email notification
        mail -s "Backup Logs" email@example.com < $BACKUPS_DIR/backup_delete.log
    fi
done

exit 0