wtf is sigwire?

sigwire is a Linux terminal tool that shows you every signal being sent between processes on your machine, live, as it happens. In Unix systems, processes communicate short interrupts called signals, things like SIGINT when you press Ctrl-C, SIGTERM when something is asked to shut down, or SIGSEGV when a program crashes. Normally these are invisible unless you are the developer of the specific program involved. sigwire watches all of them across the whole machine at once, similar to how the command tail follows a growing log file. It works by hooking into low level kernel tracepoints rather than attaching to any single process, so it can see traffic from your own applications, background services, and the kernel's own crash handling, all without those programs knowing they are being watched. Each signal is shown as a line describing who sent it, who received it, which signal it was, how it was raised, whether the receiving program had special code to catch and handle it, how long that handler took to run, and whether the signal interrupted something the receiving program was waiting on. The terminal interface is interactive. You can pause the live feed and select a row to see full details, filter signals by typing part of a process name or signal name, filter down to only signals that interrupted a paused operation, or choose which signals to show or hide. Signals are color coded by how serious they are, from routine housekeeping signals to ones that kill a process outright. Getting started is a single install command followed by one command to launch the dashboard, and it works immediately since signals are constant background activity on any running machine. It only runs on Linux and is aimed at engineers debugging process behavior, timing issues, or unexpected crashes. It is dual licensed under BSD and GPL terms.