Chapter 14. Everything /etc
You are in a maze of twisty little configs; no two are alike.
When I get saddled with an unfamiliar server, the first thing I do is look for the previous sysadmin’s documentation. When I discover there isn’t any, I study the /etc directory because it contains the basic configuration for a Unix-like system. The fastest way to go from a junior sysadmin to a midgrade one is to read /etc and the associated man pages—all of the documentation. Yes, that’s a lot of reading.
Once you understand /etc, you understand how the system hangs together. You must learn all this anyhow, but you might as well take the easier ...
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