From the wiki, In computing, data storage, and data transmission, character encoding is used to represent a repertoire of characters by some kind of encoding system that assigns a number to each character for digital representation. Okay, they mean converting character to some number for storing and transmitting data. There are two popular character sets 1. ASCII 1. American Standard Code for Information Interchange 2. Pretty much all the characters and symbols in modern keyboard comes under ASCII 3.

There are two types of variable declaration. recursively expanded variables - foo is assigned with bar which inturns assigned to ugh whose value is Huh? foo = $(bar) bar = $(ugh) ugh = Huh? all:;echo $(foo) $ make $ Huh? simply expanded variables - foo is assigned with bar however bar is not defined yet. so it outputs to nothing. foo := $(bar) bar := $(ugh) ugh := Huh?

This is a crosspost from my TIL What the heck is .PHONY in makefile? I have seen this for so long but I always shrugged off. Whatever that is. Well, finally I decided to learn about it. A bit of introduction to Makefile syntax. target: prerequisites <TAB> recipe The first target in a Makefile will be executed by default when we call make. blah: blah.o cc blah.o -o blah # Runs third blah.