Python Linux Dmidecode, How to Obtain Hw Info by Parsing

Python Linux dmidecode, how to obtain HW info by Parsing?

Figured it out, by using the following we can obtain all data that I need:

import dmidecode

def getBIOS():
    for v in dmidecode.bios().values():
        if type(v) == dict and v['dmi_type'] == 0:
            BIOSdict["Name"] = str((v['data']['Vendor']))
            BIOSdict["BuildNumber"] = str((v['data']['Version']))
            BIOSdict["SoftwareElementID"] = str((v['data']['BIOS Revision']))

We iterate the dmidecode.bios().values() to find each field of data. We can see which function to use by referencing the table below. Which is also located at this link.

We then check the type of 'v' to ensure its a dictionary (That's what I'm using in my case) and we check that the 'dmi_type' is the correct code for what we are searching for.

For example:

   Type   Information
       ----------------------------------------
          0   BIOS
          1   System
          2   Base Board
          3   Chassis
          4   Processor
          5   Memory Controller
          6   Memory Module
          7   Cache
          8   Port Connector
          9   System Slots
         10   On Board Devices
         11   OEM Strings
         12   System Configuration Options
         13   BIOS Language
         14   Group Associations
         15   System Event Log
         16   Physical Memory Array
         17   Memory Device
         18   32-bit Memory Error
         19   Memory Array Mapped Address
         20   Memory Device Mapped Address
         21   Built-in Pointing Device
         22   Portable Battery
         23   System Reset
         24   Hardware Security
         25   System Power Controls
         26   Voltage Probe
         27   Cooling Device
         28   Temperature Probe
         29   Electrical Current Probe
         30   Out-of-band Remote Access
         31   Boot Integrity Services
         32   System Boot
         33   64-bit Memory Error
         34   Management Device
         35   Management Device Component
         36   Management Device Threshold Data
         37   Memory Channel
         38   IPMI Device
         39   Power Supply

       Keyword     Types
       ------------------------------
       bios        0, 13
       system      1, 12, 15, 23, 32
       baseboard   2, 10
       chassis     3
       processor   4
       memory      5, 6, 16, 17
       cache       7
       connector   8
       slot        9

If we wanted to get the BIOS Info, we would then reference v['dmi_type'] == 0 this will return a dictionary. We can then create our own dict (in my case BIOSdict = [] ) and add the key and value as so:

BIOSdict["Name"] = str((v['data']['Vendor']))

Python, In linux obtain VGA specifications via lspci or HAL?

here is the command sample of lspci here. so basically you would call subprocess to access the command from python.

import subprocess

def find_vga():
    vga = subprocess.Popen("lspci -v -s `lspci | awk '/VGA/{print $1}'`", shell=True)
    return vga

print(find_vga())

OR

def find_vga():
    vga = subprocess.check_output("lspci -v -s `lspci | awk '/VGA/{print $1}'`", shell=True, executable='/bin/bash')
    return vga

print(find_vga())

Getting CPU or motherboard serial number?

You need to use the CPUID instruction.

CPUID

Most C compilers have some support for inline assembly, but you will need to know what you are doing.

How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell script?

If you're interested in the physical RAM, use the command dmidecode. It gives you a lot more information than just that, but depending on your use case, you might also want to know if the 8G in the system come from 2x4GB sticks or 4x2GB sticks.

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