Zenity is a free software and cross-platform computer program that allows the execution of GTK dialog boxes in command-line and shell scripts.

Like tools such as whiptail and dialog, Zenity allows easy creation of GUIs,^[2] though it has fewer features than more complex GUI-creation tools.^[3]

Other scripting languages such as Perl and Python can be used to construct full-scale GUI applications, but the zenity program enables a shell script to interact with a GUI user.... [The] user interface is not as refined as one that could be provided by a full-featured GUI application, but it is perfectly suitable for simple interactions.

As of 2012^[update], Zenity is available for Linux, BSD and Windows.^[5] A Zenity port to Mac OS X is available in MacPorts and Homebrew.

As of 2018, Zenity ports for Windows are available: zenity-windows (based on version 3.20.0) and winzenity (based on 3.8.0 / statically linked)

Zenity does not possess any built-in scripting capabilities and it must, therefore, rely on an interpreter for processing. One option is Python in combination with the PyZenity library.^[6]

fromPyZenityimport InfoMessage
fromPyZenityimport Question
fromPyZenityimport ErrorMessage

choice = Question("Please press a button.")

if choice:
 InfoMessage("You pressed Yes!")
else:
 ErrorMessage("You pressed No!")

#!/bin/sh

ifzenity--question--text="Please press a button.";then
zenity--info--text="You pressed Yes\!"
else
zenity--error--text="You pressed No\!"
fi

@echo off
zenity --question --ok-label="Yes" --cancel-label="No" --text="Please press a button."
if %ERRORLEVEL% == 1 goto error
zenity --info --text="You pressed Yes!"
goto end
:error
zenity --error --text="You pressed No!"
:end

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