ldconfig
ldconfig is a standard utility in Linux and other Unix-like systems that configures the dynamic linker run-time bindings. It updates and maintains the cache used by the dynamic linker to locate shared libraries, /etc/ld.so.cache, and creates the necessary symbolic links for library names to their actual files. The tool is typically run as root after installing new libraries to ensure correct runtime linking.
ldconfig reads the directories listed in /etc/ld.so.conf and in files under /etc/ld.so.conf.d, plus common library directories
Usage and availability: The tool is part of the glibc package on Linux. It is located in