Show HN: Sigwire – a live TUI switchboard for every signal on your Linux box
Sigwire is a new Linux tool that provides a live, terminal-based interface for monitoring system signals across all processes. By hooking into kernel tracepoints, it allows developers to observe signal generation and delivery without modifying or instrumenting individual applications.
Why it matters
It offers a powerful, non-intrusive debugging method for complex system-level issues that are otherwise difficult to trace in real-time.
tail -f for signals. Every signal any process on the box raises — who sent it, who it hit, which signal, how it was raised ( kill(2) , the kernel, a POSIX timer), whether the target caught it and how long its handler ran, whether it tore a blocked syscall out with EINTR — decoded off the kernel's signal tracepoints and streamed live to your terminal. No strace -f on one pid, no ptrace , no cooperation from the processes involved.
The article is a technical showcase of a developer tool with no subjective bias.
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