ldd
ldd is a command-line utility in Unix-like operating systems that prints the shared library dependencies of an executable or shared library file. It helps developers identify which dynamic libraries a program requires to run and checks for missing or incompatible dependencies. The tool is commonly used for debugging and ensuring proper deployment of applications.
Developers should use ldd when troubleshooting runtime errors related to missing libraries, verifying that all dependencies are correctly linked, or ensuring portability across different systems. It is particularly useful in Linux/Unix environments for diagnosing 'library not found' errors, checking compatibility in cross-compilation scenarios, and auditing security by identifying linked libraries.