How create a Application shortcut in ubuntu

 Example using spodify command

  

   nano ~/Desktop/spotify-pulseaudio.desktop

    

Write this commands 

  

   [Desktop Entry]

Version=1.0

Type=Application

Name=Spotify PulseAudio

Comment=Ejecutar Spotify con PulseAudio

Exec=spotify --audio-api=pulseaudio

Icon=/snap/spotify/96/usr/share/spotify/icons/spotify-linux-128.png

Terminal=false

Categories=Audio;Music;

StartupNotify=true

Where "Exec" is the command line and "Icon" is the path of Icon.

Grant permission for execute.

 chmod +x ~/Desktop/spotify-pulseaudio.desktop

    

uses the GNOME/GTK utility gio to mark a .desktop launcher file as trusted/executable in Ubuntu and other GNOME-based Linux desktops.

  

   gio set ~/Desktop/spotify-pulseaudio.desktop metadata::trusted true

    

Right-clicking on the icon and select → Allow to start.

Now you could Click on the icon to run the application.