Oh this is neat. Took me a bit. The shell treats the first line as a comment. It executes the second line, which eventually exec's the binary so the rest of th

Oh this is neat. Took me a bit. The shell treats the first line as a comment. It executes the second line, which eventually exec's the binary so the rest of the file do not matter to the shell. And the compiler treats the first line as a preprocessor directive, so it ignores the second line. I initially misread/mistook the first line for a shebang.