asynchronous

Q1: What is coproc in the context of Bash scripting? A1: The coproc keyword in Bash introduces a coprocess, which is a shell command preceded by the coproc keyword. A coprocess is essentially another Bash process that runs concurrently with the original (parent) Bash script. It allows you to execute a command or script in the background while continuing the execution of the main script. This is ideal for situations where you need two scripts to communicate or share data asynchronously. Q2: How does coproc help in sharing file descriptors? A2: When you create a coprocess in Bash, it automatically sets up a two-way communication path between the parent process and the coprocess.

Welcome to another deep dive into the Linux operating system’s bash capabilities, where we focus today on handling the SIGCHLD signal to monitor child processes asynchronously. By understanding and using SIGCHLD, you can enhance your scripts to manage child processes more effectively, particularly in complex bash scripts involving multiple child processes. A1: SIGCHLD is a signal sent to a parent process whenever one of its child processes terminates or stops. The primary use of this signal is to notify the parent about changes in the status of its child processes.

As a web developer, you often face the challenge of handling tasks that are time-consuming and resource-intensive, such as sending batch emails, processing large volumes of data, or performing complex calculations. Running these tasks synchronously within your web application can lead to a poor user experience, as requests take longer to complete. This is where Celery, a powerful asynchronous task queue/job queue based on distributed message passing, comes into the picture. Celery is an open-source Python library designed to handle asynchronous task queues by distributing work across threads or machines.