Files that contain the .so file extension are most commonly used for shared library files. Programs written in the C and C++ language load a shared library when they are launched on a user's hard drive.
The SO files that are used by the computer applications contain shared program logic and other functions that are used to load common files into the library. This allows more than one program to use the same code base, even if they are running on different processes.
The SO files are commonly used on Unix operating systems. The files are similar to the DLL files that are used by Windows operating systems.
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