How to setup desktop icon for any linux app

You have to follow these step to add desktop icons

step 1 : Open Terminal

Step 2 :

cd  /usr/share/applications/

Step 3 : sudo nano postman.desktop (Enter your password and a file will be opened for you)

sudo nano postman.desktop

Step 4 : Paste Following code line...

[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Name=Postman
Icon=/opt/Postman/app/resources/app/assets/icon.png
Exec=/opt/Postman/Postman
StartupNotify=false
StartupWMClass=Postman
OnlyShowIn=Unity;GNOME;
X-UnityGenerated=true

NOTE : Postman folder should place in /opt directory and please check above Icon and Exec path same as yours If not change it as your way.