Mongodump Shell Script for Cronjob

mongo_backup.sh

#!/bin/bash
 
MONGO_DATABASE="your_db_name"
APP_NAME="your_app_name"

MONGO_HOST="127.0.0.1"
MONGO_PORT="27017"
TIMESTAMP=`date +%F-%H%M`
MONGODUMP_PATH="/usr/bin/mongodump"
BACKUPS_DIR="/home/username/backups/$APP_NAME"
BACKUP_NAME="$APP_NAME-$TIMESTAMP"
 
# mongo admin --eval "printjson(db.fsyncLock())"
# $MONGODUMP_PATH -h $MONGO_HOST:$MONGO_PORT -d $MONGO_DATABASE
$MONGODUMP_PATH -d $MONGO_DATABASE
# mongo admin --eval "printjson(db.fsyncUnlock())"
 
mkdir -p $BACKUPS_DIR
mv dump $BACKUP_NAME
tar -zcvf $BACKUPS_DIR/$BACKUP_NAME.tgz $BACKUP_NAME
rm -rf $BACKUP_NAME

How to delete after 1 week please let me know..