linux c get mac address of bluetooth device

This Objective-C code Create a Terminal-Based Bluetooth Monitor in XCode?: I get several errors when compiling so it's hard to test it.blueutil ( brew install blueutil): only prints power state, not device names.blued: prints a list of mac addresses but they don't seem to change when devices go in or out of range or connect, and they aren't matched up to hostnames.I would be happy with a macOS Swift code example, AppleScript example, bash example, or pointers to good docs as answers. I've done a fair bit of Googling, and the only things I seem to be able to find are iOS swift code examples. My use-case is detecting whether my Bluetooth headphones or iPhone are in range of my Mac, to trigger security setting changes (e.g. I need a command that performs an active scan so I can poll to see if my device is nearby, not one that lists previously paired devices. To check this, run the following command in the Terminal and verify the network adapter for which you want to change the MAC address.I want to list all in-range Bluetooth devices, ideally with hostnames, but MAC addresses would be sufficient. Some Macs may use 'en1' instead of 'en0'.Make sure to use an administrator account to perform the procedure.It might be a good idea to note down your existing MAC addresses in case something goes wrong.If you still experience problems, just reboot your Mac to reset the MAC address. If you're experiencing network issues after changing the MAC address, restart your router and try connecting to it again.Thankfully, most Macs are low-maintenance and won't need rebooting often. It also means there's no way to permanently change the MAC address on a Mac. To restore your original MAC address, simply reboot your Mac.

To verify your MAC address has changed successfully, just recheck it using the procedure we discussed at the beginning.

Here are some additional tips to help you through the process:

Additional Tips While Changing Your Mac's MAC Address

Linux c get mac address of bluetooth device