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<page xmlns="http://projectmallard.org/1.0/"
 type="topic"
 id="progress">
 <info>
 <link type="guide" xref="index#dialogs"/>
 <desc>Use the <cmd>--progress</cmd> option.</desc>
 </info>
 <title>Progress Dialog</title>
 
	Use the <cmd>--progress</cmd> option to create a progress dialog.

<app>Zenity</app> reads data from standard input line by line. If a line is prefixed with #, the text is updated with the text on that line. If a line contains only a number, the percentage is updated with that number.
 
	
 
	The progress dialog supports the following options:

<terms>

<item>
 <title><cmd>--text</cmd>=<var>text</var></title>
	 Specifies the text that is displayed in the progress dialog.
 </item>

<item>
 <title><cmd>--percentage</cmd>=<var>percentage</var></title>
	 Specifies the initial percentage that is set in the progress dialog.
 </item>

<item>
	<title><cmd>--auto-close</cmd></title>
	 Closes the progress dialog when 100% has been reached.
 </item>

<item>
 <title><cmd>--pulsate</cmd></title>
	 Specifies that the progress bar pulsates until an EOF character is read from standard input.
 </item>

</terms>

The following example script shows how to create a progress dialog:

<code>
#!/bin/sh
(
echo "10" ; sleep 1
echo "# Updating mail logs" ; sleep 1
echo "20" ; sleep 1
echo "# Resetting cron jobs" ; sleep 1
echo "50" ; sleep 1
echo "This line will just be ignored" ; sleep 1
echo "75" ; sleep 1
echo "# Rebooting system" ; sleep 1
echo "100" ; sleep 1
) |
zenity --progress \
 --title="Update System Logs" \
 --text="Scanning mail logs..." \
 --percentage=0

if [ "$?" = -1 ] ; then
 zenity --error \
 --text="Update canceled."
fi
</code>

<figure>
 <title>Progress Dialog Example</title>
 <desc><app>Zenity</app> progress dialog example</desc>
 <media type="image" mime="image/png" src="figures/zenity-progress-screenshot.png"/>
 </figure>
</page>