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What does Unix Internals mean?

By ajaygiri ·
I am an aspirant Linux Administrator, my course is about to finish, I get to see a lot of job offerings for Unix Internals...What is unix internals..where is its usage? Do I need to learn it?

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Shell vs.Kernel

by eBob In reply to What does Unix Internals ...

You've probably learned a fair bit of dealing with a Linux "shell". It may have been a command shell (root# ) or a GUI, or both. You've likely been exposed to shell scripts (sed, awk, perl, grep, etc.) and some other shell tools (vi, ed, etc.).

You've possibly learned about "tuning the kernel". What you've learned about that is actually likely to be pretty specific to the system (O/S and hardware) that you've learned on.

"Unix Internals" is (among other things) learning what's going on under the covers. You've possibly learned HOW to tune the kernel. Unix Internals dwells in the area of: WHAT and WHY. It examines precisely what is going on when you do the tuning.

You'll also be looking at other deep areas behind inter-process communications, and so on.

By way of analogy: as an admin you've learned "how to drive your car", but "Internals" teaches you about how "internal combustion" and "torque conversion" work.

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