Dmidecode is a long standing,effective tool for reading manufacturer info from the SMBIOS tables present onmost modern x86 based systems. It's been available for many years on most Unixlike operating systems and has also been ported toWindows. Until now, ithad never made the leap to OS X.
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From the dmidecode website:
Dmidecode reports information about your system's hardware as described in your system BIOS according to the SMBIOS/DMI standard. This information typically includes system manufacturer, model name, serial number, BIOS version, asset tag as well as a lot of other details of varying level of interest and reliability depending on the manufacturer. This will often include usage status for the CPU sockets, expansion slots (e.g. AGP, PCI, ISA) and memory module slots, and the list of I/O ports (e.g. serial, parallel, USB). Comforting sounds mac os.
Installation on OS X
The easiest way to install dmidecode is with the homebrewpackage manager:
To build from source, sources are available from the project page onGitHub.
Once cloned or extracted from the release tarball, you may build and installwith:
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The above steps install the dmidecode binary into /usr/local/sbin. If thisis not in your $PATH, you'll need to add it or call the full file path:
Getting help
For all issues related to dmidecode itself, please see thedmidecode website.
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This port is thoroughly tested on x86_64 iMacs and MacBook Pros running 10.9+.All API calls have documented compatability since OS X 10.0 but without theopportunity to test on older machines, I'll be relying on the community forfeedback.
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If you encounter any issues, please raise an issue on the GitHub page and include your Appledevice details and OS X version. Please first check for existing issues whichmay match your problem.
The portability challenge
Dmidecode ports very nicely onto any Unix-like platform that exposes raw systemmemory (specifically the range where SMBIOS lives) as a file handle (such as/dev/mem). Unfortunately, a few years back, Apple disabled its memory filehandle by default. Now the only way to access SMBIOS memory directly (on anout-of-box OS X machine) is to use Apple's proprietary IOService API.
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This port of dmidecode aims to minimize deviation from the upstream codebase toensure that ongoing maintenance is as simple as possible. The challenge hasbeen achieving this without butchering the code with a bunch ofif apple.. else.. blocks but cleanly navigating around code that assumesSMBIOS data is accessible from a file path.
Sample output
Here's some sample dmidecode output from my MacBook Pro 2010 runningOS X 10.9.5; modified for privacy and brevity:
