What is the primary function of shared libraries in Linux?

The primary function of shared libraries in Linux is to allow multiple programs to use common functions. Shared libraries are collections of routines whose functionality can be utilized by different applications without the need to include the same code in each program. This mechanism promotes code reusability and minimizes redundancy, as programs can call upon shared libraries to perform tasks, thereby reducing the overall memory footprint and disk space used by installed applications.

When an application is linked against a shared library, it dynamically loads the library into memory at runtime. This allows for efficient use of system resources, as the library code only needs to be loaded once for all applications that require it, instead of being duplicated within each program. Additionally, if the shared library is updated, all dependent applications can benefit from the enhancement without requiring recompilation.

Although shared libraries may indirectly contribute to system security through reduced redundancy and easier updates, their primary role is to facilitate code reuse across multiple programs, streamlining application development and deployment in a Linux environment.