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In the domain of Linux and Unix-like systems, understanding how to handle Unix signals is crucial for system administration and the development of robust shell scripts. One sophisticated yet practical task is forwarding a trapped signal to a child process. In this blog article, we will delve into some common questions and answers regarding this topic, explore basic examples, and provide a working script to demonstrate this process. Q1: What is a Unix signal? A1: A Unix signal is a limited form of inter-process communication used in Unix and Unix-like systems; it's a notification sent to a process in order to notify it of an event that occurred. Examples include SIGTERM (request to terminate) and SIGKILL (forceful termination).