Use the --notification option. Notification Icon

Use the --notification option to create a notification icon.

<cmd>--text</cmd>=<var>text</var>

Specifies the text that is displayed in the notification area.

 <cmd>--listen</cmd>=icon: '<var>text</var>', message: '<var>text</var>', tooltip: '<var>text</var>', visible: '<var>text</var>',

Listens for commands at standard input. At least one command must be specified. Commands are comma separated. A command must be followed by a colon and a value.

The icon command also accepts four stock icon values such as error, info, question and warning.

The following example script shows how to create a notification icon:

#!/bin/sh zenity --notification\ --window-icon="info" \ --text="There are system updates necessary!"
Notification Icon Example Zenity notification icon example

The following example script shows how to create a notification icon along with --listen:

#!/bin/sh cat <<EOH| zenity --notification --listen message: this is the message text EOH
Notification Icon with <cmd>--listen</cmd> Example Zenity notification with --listen example