asynchronous monitoring

Introduction When working with Linux Bash scripts, efficiently managing background processes can significantly enhance the script's performance and responsiveness. One of the advanced techniques in Bash scripting includes trapping signals, such as SIGCHLD, to monitor the completion of these processes asynchronously. In this blog post, we'll explore how to effectively use the trap command to handle SIGCHLD and improve our script's interaction with background processes. Q: What exactly is SIGCHLD and why is it important in Bash scripting? A: SIGCHLD is a signal used in POSIX-compliant operating systems (like Linux and UNIX). It is sent to a parent process whenever one of its child processes terminates or stops.