A shared object file, typically with the .so extension, is a dynamically linked library used in Linux and other Unix-like operating systems. Unlike static libraries, which are linked into a program at compile time, shared objects are loaded into memory at runtime when the program is executed. This allows multiple programs to share the same library code, reducing the overall size of executables and conserving system resources. Shared objects are essential for modular software development, enabling developers to create reusable components that can be easily updated and maintained independently of the applications that use them. They are a fundamental part of the Linux system, providing a mechanism for code reuse and efficient memory management. The dynamic linking process is handled by the dynamic linker/loader, which resolves dependencies and loads the necessary shared objects into the program's address space. Updates to shared objects can be deployed without recompiling the applications that depend on them, as long as the application binary interface (ABI) remains compatible. This makes shared objects a crucial component of the Linux ecosystem, facilitating software updates and maintenance.