.\" .\" Copyright (c) 2000 Apple Computer, Inc. All rights reserved. .\" .Dd January 1, 2000 .Dt IOREG 8 .Os Darwin .Sh NAME .Nm ioreg .Nd show I/O Kit registry .Sh SYNOPSIS .Nm .Op Fl b .Oo .Op Fl c Ar class .Op Fl l .Op Fl n Ar name .Oc .Op Fl p Ar plane .Op Fl s .Op Fl w Ar width .Sh DESCRIPTION .Nm displays the I/O Kit registry. The use of the .Fl c, .Fl l, or .Fl n options cause .Nm to show the properties of objects matching the specified criteria. By default, .Nm does not show the properties of an object. .Pp The options are as follows: .Pp .Bl -tag -width flag .It Fl b Show the object name in bold. .It Fl c Show the object properties only if the object is, or derives from, the specified .Ar class . .Pp .It Fl l Show the object properties. .Pp .It Fl n Show the object properties only if the object has the specified .Ar name . .Pp .It Fl p Traverse the registry over the specified .Ar plane . The default plane value is ``IOService''. The other planes, such as ``IODeviceTree'', can be found under the ``IORegistryPlanes'' property of the root object (ioreg -n Root). .Pp .It Fl s Show the object state (busy state, retain count). .It Fl w Clip the output to the specified line .Ar width . The default width value is the current screen size. A value of 0 specifies an unlimited line width.