// exsw8.swift bring in separetly compiles files  

#if os(OSX) || os(iOS) // for libraries, portable for OSX and Linux
import Foundation
#elseif os(Linux)
import Glibc
#endif// 

print("exsw8.swift running");
print("this requires a lot of setup in Linux")
print("on MACOSX this seems only possible in  playground ?")