Most code samples I see that demonstrate shell code preface each command with $. Having a prefix makes sense, but I'm confused as to why $ is used in particular. Some other symbol, like !, that can be ...
80x24 characters seems to be a very common default for terminal windows. This answer provides a very good historical reason as to why the width is 80 characters. But why is the height commonly 24 ...
Why is 80 characters the "standard" limit for code width? Why 80 and not 79, 81 or 100? What is the origin of this particular value?
There seem to be a lot of developers who write their SQL by capitalising the keywords: SELECT column FROM table INNER JOIN table ON condition WHERE condition GROUP BY clause HAVING ...