Listen for SIGINT and SIGTERM Events in a ZX Script

Have you ever needed to handle signal events within your ZX script? For example, what happens if you need to handle a graceful shutdown of your long-running or infinite-running script? Or what happens when the user forcefully stops the script?

These signal events are typically “SIGTERM”, “SIGINT”, and similar events. When using a script language like Bash, these events are most commonly captured with trap commands, but what happens when we’re using ZX?

In this tutorial we’ll explore how to use simple JavaScript to capture signal events in a modern ZX script.