prtconf – displays the Solaris device tree
prtdiag – displays a table of diagnostic information that summarizes the status of system components (also use -v to show additional parts)
prtfru – displays a hierarchical list of all FRUs in the system (-c & -l)
psrinfo – displays additional information about the CPUs (-v includes types and speeds)
showrev – displays revision information for the current hardware and software (-p shows patches – same as patchadd -p)
sysdef – display current settings of kernel tunable parameters (defined in /etc/system, applied with reboot)
prctl – displays resource controls of running processes
fuser -c /mountpoint – displays processes (PIDs) with open files in the specified mount point (use without the -c to show non mount points)