Source Code and Software
Source code is the human-readable instructions for building the actual machine code that makes up a program. You’ve probably already been exposed to some form of source code; if not, go look at a few files under /usr/src (assuming, of course, that you installed the source code as I recommended back in Chapter 3). While you don’t have to read source code, you should be able to recognize it.
Once you have a program’s source code, you build (or compile) the program on the type of system on which you want to run it. (Building software for a foreign platform via cross-compiling demands that you know much more about building software, and is not always possible.) If the software was written for an operating system sufficiently ...
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