beginner pathway
Computer and Linux Foundations
Learn how files, terminals, commands, permissions, and careful local changes fit together.
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Map Files Before You Move
A filesystem is a map of named locations. Builders first identify where they are, what they are allowed to touch, and what must be preserved. Safe habits include reading paths carefully, avoiding broad delete commands, and keeping generated output separate from source and data.
Exercise
Write the three commands you would use to show your current folder, create a practice folder, and list it without deleting anything.
Assessment
Which command tells you the current directory?
pwd prints the working directory. It is a read-only orientation command.
Sources
Responsible Terminal Use
The terminal is powerful because commands do exactly what you ask. Responsible use means preferring read-only inspection first, understanding command scope, and avoiding administrator privileges until the reason and rollback are clear.
Exercise
Sort these commands into read-only or writes-data: ls, cat README.md, cp a b, rm old.txt, mkdir notes.
Assessment
Why is sudo not a normal first step?
Administrator privileges increase blast radius. Use them only with a clear need and reviewed command.
Sources
Mini Project: A Recoverable Workspace
A recoverable workspace has a purpose, a small set of source files, generated outputs that can be recreated, and notes explaining what was done. This makes learning durable instead of mysterious.
Exercise
Draft the README text for a practice workspace that another beginner could understand.
Assessment
What should be backed up first: source notes or regenerable cache files?
Source notes preserve intent and human knowledge. Caches can usually be rebuilt.
Sources
Final mini-project
Create a documented practice workspace with one source note, one output folder, and a written backup rule.