I hope that my post is acceptable although I am actually running lubuntu, not ubuntu.
I am trying to create an executable file but I am having difficulties.
I created a script with a text editor and saved it onto my desktop:
#!/usr/bin echo hello
sudo chmod +xand
sudo chmod 755 on it.
When I double click on it I get a dialogue box asking me either to execute or execute in terminal as follows:
When I click on execute, I get
Failed to execute child process "/home/name/Desktop/helloworld" (Permission denied)
If I click on execute in terminal, I just get a new terminal window with
name@macbook:~/Desktop$ but no sign of my script.