This is a simple backup script for Linux dedicated servers to back up a specific directory and all of it's sub directories and save them in your backup FTP storage, organized by date.

1. Download lftp using the command: yum install lftp (CentOS) or apt-get install lftp (Debian and Ubuntu)

2. Have a directory in the root of the back up FTP named "backup"

3. Modify the script below with your credentials and settings:

#!/bin/bash
### FTP login credentials below ###
FTPU="FTP-Username"
FTPP="FTP-Password"
FTPS="FTP-IP-Address" 

NOW=$(date +"%d-%m-%Y")

### local directory to backup ###
FILE="/DIR-to-Backup"
 
### Login to remote server ###
### No need to edit any of the fields below ###
### Default DIR is backup ###
lftp -u $FTPU,$FTPP -e "cd backup;mkdir $NOW;cd $NOW;mirror -R $FILE /backup/$NOW;quit" $FTPS

4. Save the script as backup.sh and run "chmod +x ./backup.sh" to make into an executable.

5. run the back up script by typing ./backup.sh 

The script can be scheduled as a cron job for automated backups on a specific frequency.