Volume Controll through sh

Hi to everyone,

I am really new to volumio and working with a linux distribution. At the moment I am working on a little script which should adjust the volume to 45
So I wrote the script which contains the following content


volumio volume 45[/b]

Now when I trie to start the file

The following output appears on my screen
line 3: volumio: command not found

Is it possible to write a specific script for volumio?

Thanks for your help