Command-Line

For no specific reason I can tell my bluetooth keyboard SUBBLIM dropped the connection on my linux mint 21 machine. Bluetooth logs shows: bluetoothd[1109]: profiles/input/hog-lib.c:report_reference_cb() Read Report Reference descriptor failed: Request attribute has encountered an unlikely error bluetoothd[1109]: profiles/input/hog-lib.c:info_read_cb() HID Information read failed: Request attribute has encountered an unlikely error I procedded to solve it as follows: Install sudo apt-get install blueman load module modprobe btusb Removed the bluetooth device from the UI or you can use the command bluetoothctl remove 54:46:6E:2F:15:5B ...

I have had situations where I needed to check the connectivity using telnet but the server did not have it installed nor the possiblity to do so. I’ve found that it can be achieved using only curl: curl -vv telnet://serverIP:port This will use the telnet portocol instead of the known http(s). curl support about 28 protocols that you can find here: https://everything.curl.dev/protocols/curl.html