Executable file formats
ELF
Executable and Linkable Format (ELF) is the default binary format on Linux-based systems. It is used for executable files, object files, shared libraries, and core dumps.
Every ELF file starts with an executable header, which is just a structured series of bytes telling you that it’s an ELF file, what kind of ELF file it is, and where in the file to find all the other contents.
PE
