Linux Operating System Services

In the sample programs so far, the ability to exit programs and display a string was needed. For Linux, the operating system services were called directly to do this. In all high-level programming languages, there is a runtime library that includes wrappers for calling the operating system. This makes it appear that these services are part of the high-level language. In this chapter, what these runtime libraries do under the covers to call Linux and what services are available will be looked at.