This package exports interfaces to the underlying native linux system.

## Overview

The {@link frysk.sys} package provides the client with direct access to a number of underlying linux kernel and `libc` interfaces.

Note that, where possible, the interfaces have attempted to be event-driven friendly. For instance, {@link frysk.sys.Wait} notifies the client of wait status information by calling the applicable {@link frysk.sys.Wait#Observer} method and not by returning a status object.

## Errors

Should an underlying system call return an error indication then that error is propagated up the call chain by throwing a {@link frysk.sys.Errno} run-time exception.