To control Bluetooth from the terminal, the primary and most powerful tool on Linux systems is bluetoothctl, an interactive command-line manager bundled with the BlueZ package. Managing connections via the command line provides a faster interface than graphical managers and allows you to seamlessly automate workflows using bash scripts.
Below is a complete guide to controlling Bluetooth using the terminal, covering setup, scanning, pairing, and automation. 1. Initialize the Bluetooth Service
Before launching the interactive utility, you must ensure the system daemon is active and running. Check service status: sudo systemctl status bluetooth Use code with caution. Start the service: sudo systemctl start bluetooth Use code with caution. Enable service on boot: sudo systemctl enable bluetooth Use code with caution. 2. Enter the Interactive Shell
Launch the dedicated Bluetooth control environment by executing bluetoothctl: sudo bluetoothctl Use code with caution.
Your terminal prompt will change to [bluetooth]#, indicating you are inside the dedicated Bluetooth manager. 3. Basic Device Management
Once inside the bluetoothctl interactive shell, use these fundamental control sequences: Power on the controller: power on Use code with caution.
Enable the pairing agent: Allows your system to handle specific PIN requests or key approvals. agent on default-agent Use code with caution.
Scan for nearby hardware: Activates receiver discovery. Note down the MAC address (formatted like XX:XX:XX:XX:XX:XX) of your intended device. scan on Use code with caution.
Stop active scanning: Turn off discovery once you have found the MAC address to conserve performance. scan off Use code with caution. 4. Pairing and Connecting Devices
Use the specific MAC address discovered during the scanning step to bind and route audio or data data feeds: Linux Bluetooth LE Command Line
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