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Comments About Shell, Awk, and Make

Here I am syndicating my forum comments.

I will try to make this worthwhile!

Shell and Unix Tools

explaining syntax of time -- why is time builtin to bash?

explaining syntax of find -- lobsters

• "find is a predicate/action language"
• "find and awk should be combined"

• find is like test, it has ambiguity

• idea for complete replacement of find

• https://lobste.rs/s/kkre7i/find1revisited2002#cyyfqsk

I thought there was a second link here too

• https://news.ycombinator.com/item?id=15320972

  • semantics of > and < redirects work
  • syntax of redirects, with the optional LHS descriptor
  • the grouping problem

• Array style guide

  • from old post: copy and splice
  • split and join
  • also: iterate
  • bash 4.3 bug

Awk

• Awk vs. JAvaScript

• Also: note that find is like awk

Make

• GNU Make Replacement Idea ? What is this?

  • oh maybe this is doing a COMPLETE replacement
  • like Oil is a complete replacement for shell

• Automatic Prereqs -- I wrote code for this

  • .PHONY targets are a smell, make as dataflow
• The "$@" pattern. I should mention the one that does more error checking.

Three turing-complete languages in GNU Make:

What are Make's weaknesses with regard to dataflow? The obvious thing is wrong. - multiple outputs

Misc TODO

• More lisps: m4, cmake