GDB
GDB (GNU Debugger) is a command-line debugger for programs written in C, C++, and other languages, used to inspect and control the execution of software to find and fix bugs. It allows developers to set breakpoints, step through code, examine variables and memory, and analyze program crashes. As part of the GNU Project, it is widely available on Unix-like systems and supports various architectures and platforms.
Developers should learn GDB when working on low-level or system programming in C/C++, especially for debugging complex issues like memory leaks, segmentation faults, or concurrency problems in applications such as operating systems, embedded systems, or performance-critical software. It is essential for environments where graphical debuggers are unavailable or when deep, command-line-based analysis is required, such as in server deployments or cross-compilation scenarios.