The Solaris operating system comes with the picld daemon, which allows hardware specific data to be presented in a general way. When clients read data from a PICL implementation, they can be ensured that “temperature” (or any counter value for that matter) means the same thing across different hardware implementations. To print the PICL tree, you can use the prtpicl(1M) utiltiy:
$ prtpicl -v |more
/ (picl, 3800000001)
:PICLVersion 1.100000
:_class picl
:name /
platform (upa, 3800000005)
:PlatformGroup sun4u
:OS-Version Generic_118558-06
:OS-Release 5.9
:HostName winnie
:OS-Name SunOS
:device_type upa
:banner-name Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 333MHz)
:clock-frequency 0x4f64b50
:model SUNW,375-0066
:energystar-v2
:#size-cells 0x2
:breakpoint-trap 0x7f
:#address-cells 0x2
:#interrupt-cells 0x1
:interrupt-map-mask 00 00 00 3e 00 00 00 00 00 00 00 00
:interrupt-map
00 00 00 3c 00 00 00 00 00 00 00 00 f0 05 fa 24 80 00 00 33
:idprom
01 80 08 00 20 c0 f6 e9 00 00 00 00 c0 f6 e9 a9 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00
:reset-reason S-POR
:boot-retained-page
:PAGESIZE 8192
:MMU_PAGESIZE 8192
:MMU_PAGEOFFSET 8191
:relative-addressing 1
:pm-hardware-state no-suspend-resume
:devfs-path /
:driver-name rootnex
:binding-name SUNW,Ultra-5_10
:bus-addr
:instance -1
:PlatformName SUNW,Ultra-5_10
:_class upa
:name platform
memory (memory, 38000000c4)
:Size 0x40000000
:UnitAddress 0,0
:available
[ ... ]
I find myself using this all the time to find a wide variety of information. Nifty utility!