ELF
ELF (Executable and Linkable Format) is a standard binary file format used for executables, object code, shared libraries, and core dumps in Unix-like operating systems, including Linux and BSD variants. It defines the structure for how code and data are organized in files, enabling the operating system to load and execute programs efficiently. ELF is crucial for system-level programming, linking, and debugging, as it provides a flexible and extensible framework for binary representation.
Developers should learn ELF when working on low-level systems programming, such as developing operating systems, compilers, linkers, or debuggers, as it is the de facto standard for binary files in Unix-like environments. It is essential for understanding how programs are loaded into memory, how dynamic linking works, and for analyzing binary files in security contexts like reverse engineering or malware analysis. Knowledge of ELF is also valuable for optimizing performance in embedded systems or when writing custom loaders.