Sun Microsystems Enterprise 250 Owner's Manual page 265

Software Commands
System software provides Solaris and OBP commands that you can use to diagnose
problems. For more information on Solaris commands, see the appropriate man
pages. For additional information on OBP commands, see the OpenBoot 3.x Command
Reference Manual. (An online version of the manual is included with the Solaris
System Administrator AnswerBook that ships with Solaris software.)
Solaris prtdiag Command
The prtdiag command is a UNIX shell command used to display system
configuration and diagnostic information. You can use the prtdiag command
to display:
System configuration, including information about clock frequencies, CPUs,
memory, and I/O card types
Diagnostic information
Failed field-replaceable units (FRUs)
To run prtdiag, type:
% /usr/platform/sun4u/sbin/prtdiag
To isolate an intermittent failure, it may be helpful to maintain a prtdiag history
log. Use prtdiag with the -l (log) option to send output to a log file in /var/adm.
Note – Refer to the prtdiag man page for additional information.
An example of prtdiag output follows. The exact format of prtdiag output
depends on which version of the Solaris operating environment is running on your
system.
Chapter 11 Diagnostics and Troubleshooting 247