Linker-related environment points
The dynamic loader/linker and linking concepts are inescapable components involved in the process of program linking and execution. Throughout this book, you will learn a lot about these topics. In Linux, there are quite a few ways to alter the dynamic linker's behavior that can serve the binary hacker in many ways. As we move through the book, you will begin to understand the process of linking, relocations, and dynamic loading (program interpreter). Here are a few linker-related attributes that are useful and will be used throughout the book.
The LD_PRELOAD environment variable
The LD_PRELOAD environment variable can be set to specify a library path that should be dynamically linked before any other libraries. ...
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