problem with bash script

[Paul Smith]

On Sat, 2014-03-08 at 16:56 +0000, Paolo De Michele wrote:
> I have a problem with my bash script.
> this script will do a backup in a particular directory - look below:
> 
> #

This script, as you say, is a bash script.  It's not a POSIX shell
script: it uses many bash-specific features.

Hence, you must specify to the system that you want to use bash
specifically, and not just a POSIX shell, to run the script.

Make the first line:

#!/bin/bash

(no whitespace, newlines, etc. before it.  The very first two characters
in the file must be the #!)