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Linux — The Living DigiRef™
Preparing your Interaction Arc…
OSB Coach · DigitalExpo
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This is not a slogan. It is the single habit that separates people who operate Linux from people who collect Linux commands. We install it on your very first node and we never let go of it. When you paste in a command an AI generated, you will not ask "does this look right?" — you will run it, read the real output, and know.
Every node is a unit of capability, not a topic. It carries: Why This Matters (the real capability being added) · Mental Model (the abstraction before the syntax) · the commands/technique · a DigiPad Experiment where you predict a command's effect before running · a CLI Transfer where you run it on a real or lab system · Coach Questions · a Break It drill where you misconfigure something on purpose, read the error, and repair it · an Explain It Back · a Save to DigiPad artifact that persists (a command log, a runbook, a hardening checklist, an incident timeline) · and a Competency Gate you clear by demonstrating on a live or lab system — never by multiple choice.
You will see colored cards for those steps. They are the rhythm. Follow it.
This is one canonical Linux DigiRef. Each node carries exactly one access level:
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