In GNOME (the desktop environment commonly used in Linux distributions like Fedora and Ubuntu), the equivalent to Android's App Pinning (which keeps an app in memory and on the screen until you unpin it) is a bit different due to the nature of desktop environments.

GNOME Equivalent Features:

1. Favorites Bar (Dash to Dock/Dock):

   • You can pin frequently used applications to the Dash (or Dock) for quick access. This doesn’t keep the app open, but it makes launching it faster.
   • To pin an app, open the Activities Overview, find the app, right-click it, and select "Add to Favorites".

2. Window Management:

   • GNOME doesn’t have a direct "pinning" feature like Android, but you can use workspaces to keep an app open and accessible.
   • You can also set a window to "Always on Top" by right-clicking the window’s title bar and selecting "Always on Top". This keeps the window visible above others, but it doesn’t prevent it from being closed.

3. Extensions for Advanced Pinning:

   • Extensions like "Window List" or "Dash to Panel" can enhance window management, but they don’t replicate Android’s app pinning exactly.
   • "Auto Move Windows" (an extension) can automatically move specific apps to a workspace, keeping them organized.

Key Difference:

• Android’s App Pinning locks an app in place and prevents switching away from it (useful for kiosks or single-app use).
• GNOME’s features focus on quick access and window management, not locking an app in place.

If you’re looking for a way to lock a specific app and prevent it from being closed or minimized (like Android’s pinning), you might need a third-party tool or a custom script. Would you like help finding such a tool?