ls /dev

[bitsnpcs]

I'm not sure what you're trying to do, but it seems that you want to ls into a usb stick?
Hope this helps!

[member=7109]Moltke[/member] thank you  I have read the info on the link you gave me, it was helpful.

The answer by [member=6935]supergamer[/member] is what I needed to know, I cannot mark things solved in this section of forum.

I am not trying to do something at this stage, just experimenting.

What I was curious about, my motivation, was how a GUI only displays the most recently mounted storage device, as the output option field, or how to make a GUI do this.
and
if I could use this command ls /dev/sd* by attaching it to a button in a GUI to achieve similar type of result.

I understand from [member=6935]supergamer[/member] explanation why this did not work in the way I expected, and I also learned some new and useful information on the structure and use from you both.