I have created my own .desktop file by copying an existing one
[Desktop Entry]
Type=Application
Name=Arduino IDE
GenericName=Arduino IDE
Comment=Open-source electronics prototyping platform
Exec="/home/username/Programme/Arduino-IDE/arduino"
Icon=arduino-arduinoide
Terminal=false
Categories=Development;IDE;Electronics;
MimeType=text/x-arduino;
Keywords=embedded electronics;electronics;avr;microcontroller;
StartupWMClass=processing-app-Base
and modifying it:
[Desktop Entry]
Type=Application in terminal
Name=Matlab
GenericName=Matlab
Comment=Open-source electronics prototyping platform
Exec=/home/username/Programme/Matlab/bin/matlab
Icon=arduino-arduinoide
Terminal=true
Categories=Development;IDE;Electronics;
MimeType=text/x-arduino;
This has worked once, but for whatever reason the applications menu can no longer find it.
I am running Ubuntu 20.10 on a HP Envy x360 15-ee0755ng.
~/.local/share/applications/
and retry. Also note that at least previous versions of MATLAB are normally started bymatlab -desktop