These options which obscure me are like ps aux, route -ee, gcc -fPIC xxx, find . -name xxx and so on. The examples above aren't comprehensive. I.e., I don't think that the argument handle ...
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 ...
I was reading a topic on SO: Why are scripting languages (e.g. ...) not suitable as shell languages?. Especially I liked the answer by Jörg W Mittag, from which I learned interesting things about ...