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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