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(bouncy intro music)

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- [Instructor] We have a couple challenge questions

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having to do with how many module files are there

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and how many lines in the modules.dep file.

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So let's start by changing directory.

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There we go.

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We can see the kernel I'm running here is

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68.0, yada yada.

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Do a list. We got some files, we got some sub directories.

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Let's start off by counting all the .ZST files.

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A little bit of fine command magic

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and I get 854 modules are built for this kernel.

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Later on, we'll look how many we're actually using.

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It'll be a lot less than 854.

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And then the other question was

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how many lines are in modules.dep?

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So that's pretty easy also with WC -l.

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854, that's not a coincidence.

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There's a line in modules.dep for each module file,

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and it'll list dependencies for that file.

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We'll talk more about that later.