ioreg man page on OpenDarwin

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IOREG(8)		  BSD System Manager's Manual		      IOREG(8)

     ioreg — show I/O Kit registry

     ioreg [-b] [[-c class] [-l] [-n name]] [-p plane] [-s] [-S] [-w width]

     ioreg displays the I/O Kit registry.  The use of the -c, -l, or -n
     options cause ioreg to show the properties of objects matching the speci‐
     fied criteria.  By default, ioreg does not show the properties of an

     The options are as follows:

     -b	   Show the object name in bold.

     -c	   Show the object properties only if the object is, or derives from,
	   the specified class.

     -l	   Show the object properties.

     -n	   Show the object properties only if the object has the specified

     -p	   Traverse the registry over the specified plane.  The default plane
	   value is ``IOService''.  The other planes, such as ``IODevice‐
	   Tree'', can be found under the ``IORegistryPlanes'' property of the
	   root object (ioreg -n Root).

     -s	   Show the object state (busy state, retain count). This is the

     -S	   Don't show the object state (busy state, retain count).

     -w	   Clip the output to the specified line width.	 The default width
	   value is the current screen size.  A value of 0 specifies an unlim‐
	   ited line width.

     -x	   Print numeric property values in hexadecimal.

Darwin				January 1, 2000				Darwin

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