Running the script with the icon on the Ubuntu 16.04 LTS desktop

I warmly welcome. I am a novice Linux user, therefore I am asking more experienced colleagues for understanding and possible help step by step. The problem for most of you will be trivial, so please help ...

I would like to create a script activator on the desktop that shows connected drives. My script:

#! / Bin / sh
sudo fdisk -l

When you start the console and enter sh filename, the script starts correctly

I tried to create the activator as follows:

gnome-desktop-item-edit ~ / Pulpit / --create-new

The activator configuration window pops up, I select Type Program or run in the console, I provide the path, but unfortunately after trying to run the activator a message appears:

An error occurred while starting the program

What am I doing wrong ? I am asking for help and best regards

You are trying to run a terminal command in a graphical environment which is not allowed to succeed. You must run a terminal for him. Enter the following command if you don't have xterm then install it.

Now my script looks like this. Unfortunately, still the same message
xterm is installed

It wasn't in the script that you were supposed to write it only in the 'command' field of the activator.
The script was to remain unchanged, although it is not used in this example.

Thank you very much colleagues for help. It actually works
What if I wanted to go one step further and execute a more complex script? It means

After running the activator on the desktop:

1. The xterm console is running
2. Displays drives with the command fdisk -l
3. Then I would like to burn the image from the disk to a carrier for example:

dd if = / home / rafal / Documents / filename.br of = / dev / sdg

4 The problem is that I would like the script to ask which image to copy e.g. .... Press 1 is name1, press 2 is name_2 etc. ...
and that you can choose the target drive, i.e. 1 is sda, 2 is sdb etc.

I am asking for help in carrying out such a script

Read the case instruction.
Examples can be found using the search engine.
And you are already beyond the thread.

I wouldn't want to start a new thread. I am asking for help for experienced users, it's really a trivial matter

Start by reading a course, there are thousands of them on the web.
http://dief.republika.pl/main.html