Create / modify keyboard shortcuts in Gnome under Linux / UNIX

To create or modify keyboard shortcuts in Gnome on a Linux or UNIX system, follow these steps:

1. Open the "Keyboard" settings from the "Settings" menu or by searching for "Keyboard" in the Gnome search bar.

2. Click the "Custom Shortcuts" tab.

3. To create a new keyboard shortcut, click the "+" button and enter a name and command for the shortcut.

4. In the "Shortcut" field, press the desired key combination to set the shortcut.

5. To modify an existing keyboard shortcut, click on it in the list and press the desired key combination in the "Shortcut" field.

6. Click the "Apply" button to save your changes.