Yeah -- for that matter, it doesn't mention libraries in general.

There is "system libraries" in the bottom of the middle (assembler, compilers, linker) circle.... (it's at the bottom, so a bit harder to see)

Eyedrops applied.

Regards,
Alister

Does anyone wish to volunteer to create a draft revised version of "the onion" conceptual unix architecture based on the discussion so far, and upload the new image for more discussion?

I've been working on something actually, but keep rearranging and revising it. I'll post it if/when I come up with something I'm happy with.

I've never seen one of these that I like and probably never will. It used to be that I could agree with one or two inner circles. But now we have virtual systems. The kernel might not be wrapped around real hardware any more.

But about your onion... the assembler is usually known as "as". You have "as" as an application program. Maybe you should move it the "assemblers and compilers" layer.

Hi.

For the topic of how components fit together, I preferred an O'Reilly graphic from Power Tools, rather than the onion for training in *nix -- see Figure 1.1 on page 8 (click Browse Contents button on top of book image) at Unix Power Tools, 3rd Edition-O'Reilly Media or see page 5 of the really long PDF O'reilly Unix Unix Power Tools (5.6 Mb) PDF Ebook Download

(I'm not sure I can post it directly from O'Reilly or from the pdf for legal reasons, there may be other sources, and it's possible that O'Reilly might not mind, but I just don't know.)

It was better for me in the pedagogical sense, because I could start with the User block on the whiteboard, and develop the diagram as the topic unfolded. Not much drawing skill was required, thankfully.

One could then discuss development, libraries, etc. -- very open-ended -- with simple block diagrams. Having the students do the drawing as we talked and answered questions helped them see and internalize the big picture -- which is what we called that section ... cheers, drl