[kbelder]

I think case sensitivity in a language, or a shell, is a mistake; but I'm outnumbered 100 to 1 by people who want it.

[usrbinbash]

And why do you think that?

'a' and 'A' are two different code points. The computer doesn't care about our cultural notation that they are two somewhat-related things. One is `1100001` the other is `1000001"

Therefore they mean, and should mean, different things.