PortClue tool identifies port conflicts without ss or lsof installed

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A developer debugging a browser VNC connection discovered that port 5900 was held by a stale x11vnc process rather than the intended one. Standard diagnostic tools ss and lsof were unavailable on the system, making the conflict difficult to identify through conventional means. PortClue, a lightweight open-source utility, resolved the issue by querying the Linux kernel directly and returning human-readable output including the owning PID and binding details. Unlike traditional tools, it describes addresses in plain language, distinguishing loopback-only from all-interface bindings without requiring interpretation. The tool is read-only, poses no risk to running services, and is available on GitHub for systems where standard network utilities are absent.

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