Get Ubuntu System facts with facter

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a library for retrieving facts from operating systems.A cross-platform Ruby library for retrieving facts from operating systems. Supports multiple resolution mechanisms, any of which can be restricted to working only on certain operating systems or environments. Facter is especially useful for retrieving things like operating system names, IP addresses, MAC addresses, and SSH keys.

It is easy to extend Facter to include your own custom facts or to include additional mechanisms for retrieving facts.

Install facter in Ubuntu

sudo apt-get install facter

This will complete the installation.

Using facter

factor syntax

factor OPTION

If you want to view your system facts just type the following command from your terminal


Output looks like below

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6 Responses

  1. George says:

    All I have to say is, “Wow”. This is just plain cool and will most likely make its way to all my servers.

    Thanks much

  2. Nice article, thanks.

    Just a small note, though: Erasing a part of the fqdn might be a good idea – but the values of hostname and domain are still visible…

  3. admin says:

    thanks mate i updated the image

  4. Facter is a cool tool but it’s big brother Puppet makes use of these “facts” to automate configuration management of your host! You can find more about Puppet here

  5. ryan@lan says:

    Does my mac adresse change if I upgrade my computer with some other hardware? For example change the graphic card?

  6. Ryan – No. Your MAC address is linked to your network interface – see for more details. It will not change when you change the graphics card. It will however change if you change your network card.

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