Ubuntu script to fix duplicate Steam game shortcuts by appending missing StartupWMClass values

fix_steam_shortcuts.sh

#!/bin/bash

# 1. Copy all Steam shortcuts from Desktop to the system applications folder
cp ~/Desktop/*.desktop ~/.local/share/applications/ 2>/dev/null

# 2. Loop through all application shortcuts to fix them
for file in ~/.local/share/applications/*.desktop; do

    # Check if the file is a Steam game launcher and is missing the fix
    if grep -q "rungameid" "$file" && ! grep -q "StartupWMClass" "$file"; then
        
        # Extract the numerical AppID from the launch URL
        appid=$(grep -oP "rungameid/\K[0-9]+" "$file")
        
        # Append the correct window tracking class line to the end of the file
        echo "StartupWMClass=steam_app_$appid" >> "$file"
        
        # Print a clean confirmation message to your terminal screen
        echo "Fixed: $(basename "$file") (AppID: $appid)"
    fi
done

# 3. Refresh Ubuntu's desktop environment database so the icons update immediately
update-desktop-database ~/.local/share/applications/

One liner:

cp ~/Desktop/*.desktop ~/.local/share/applications/ 2>/dev/null; for f in ~/.local/share/applications/*.desktop; do if grep -q "rungameid" "$f" && ! grep -q "StartupWMClass" "$f"; then appid=$(grep -oP "rungameid/\K[0-9]+" "$f"); echo "StartupWMClass=steam_app_$appid" >> "$f"; echo "Fixed: $(basename $f) with AppID $appid"; fi; done; update-desktop-database ~/.local/share/applications/