Explain the purpose of common Linux top-level directories before changing files.
A path is a promise about lifecycle. The fastest way to look competent on Linux is not memorizing every directory; it is asking what kind of file you are touching. Configuration Has A Home /etc is where host-specific configuration normally lives. Treat it as reviewable and recoverable. Before changing a file there, capture the current version, know which service reads it, and know how to validate the syntax. State Changes Shape /var holds data that changes while the system runs: logs, queues, caches, and application state. Some files are evidence, some are disposable, and some are production data. The directory…
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