Hcidump
lastmod 2026-11-10created 2022-09-233 edits
hcidump is a CLI tool included in the Linux BlueZ stack that captures and prints packets passing through the Bluetooth HCI (Host Controller Interface) layer. It can dump the commands, events, and data packets exchanged between the host and the Bluetooth controller in real time or save them to a file, so it is used to analyze connection problems with Bluetooth devices. In recent BlueZ versions, btmon takes over the same role.