Rfkill is a tool for enabling and disabling wireless devices. Using “rfkill list” command we first check the list of available wireless devices supported in our hardware as, $ rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no As seen above we have a WiFi, LAN and Bluetooth supported and ON in my laptop. Now lets try turning ON & OFF this Bluetooth device using rfkill as, Turn OFF Bluetooth $ rfkill block bluetooth Or using “rfkill index” bluetooth can be turned off as, $ rfkill block 3 Now, as we can see in “rfkill list” Bluetooth is now turned OFF, $ rfkill list 3: hci0: Bluetooth Soft blocked: yes Hard blocked: no Turn ON Bluetooth $ rfkill unblock bluetooth OR using “rfkill list” index, $ rfkill unblock 3

Gotchas and Common Issues

  • Permission Verification - confirm execution permissions and path variables before invoking system binaries.

  • Version Compatibility - check software version release notes for deprecated flags or syntax changes.

  • Log Monitoring - inspect system logs (journalctl or /var/log) to troubleshoot execution failures.

Following these steps ensures clean configuration, proper security boundaries, and reliable execution for turn on and turn off bluetooth from command line.