To use notification hooks in Sxmo, you need to create a shell script that performs the desired action and it is usually placed in the `/usr/share/sxmo/hooks` directory [1]. The script should be named after the application that generates the notification, with the `.hook` extension. For example, to create a hook for the `signal-desktop` application, you would create a script named `signal-desktop.hook` in the `/usr/share/sxmo/hooks` directory [1]. Here's an example of a simple notification hook script that displays a notification on the screen using the `dunst` notification daemon: ```sh #!/bin/sh # Display a notification on the screen dunstify -u low -a "$2" "$1" ``` This is a simple shell script designed to display notifications on a Linux desktop environment using the `dunstify` command. This script takes two arguments: the first argument is the notification message, and the second argument is the name of the application that generated the notification. The `dunstify` command is used to create the notification. It accepts various options, and in this script, it is configured to set the notification urgency level to "low" using the -u low option. The `-a "$2"` option is used to set the application name for the notification. The application name is dynamic and is determined by the second argument passed to the script ($2). This allows you to associate the notification with a specific application. Finally, the content of the notification is specified as "$1", where the message text is enclosed in double quotes to ensure that it is treated as a single argument, even if it contains spaces or special characters. Once you have created a notification hook script, you need to make sure that it is executable by running the following command: ```sh chmod +x /usr/share/sxmo/hooks/<app-name>.hook ``` Replace `<app-name>` with the name of the application that the hook is for [1]. Note that notification hooks are only executed if the `sxmo_notifications` script is running. You can start the script by running the following command: ```sh sxmo_notifications & ``` This command starts the `sxmo_notifications` script in the background [1].