Guide: Bluetooth command line tools for linux

To enable Bluetooth on Linux via the command line, you can use the following steps:

  groups $USER

Check if Bluetooth is installed:

Make sure the Bluetooth utilities are installed. On most distributions, the package is called bluez. Install it if it's not present:
- Debian/Ubuntu:
```
sudo apt install bluez
```
- Fedora:
```
sudo dnf install bluez
```
- Arch Linux:
```
sudo pacman -S bluez
```
Start the Bluetooth service:

Start the Bluetooth service using systemctl:
```
sudo systemctl start bluetooth
```
To ensure the Bluetooth service starts automatically at boot:
```
sudo systemctl enable bluetooth
```
Check the status of Bluetooth:

You can check if Bluetooth is active with:
```
sudo systemctl status bluetooth
```
Enable the Bluetooth adapter (if needed):

If the Bluetooth adapter is powered off, you can turn it on using bluetoothctl:
```
bluetoothctl
power on
```
Pairing and Connecting Devices:

Inside the bluetoothctl interactive shell:
- To list available devices:
```
devices
```
- To start scanning for devices:
```
scan on
```
- To pair with a device:
```
pair <device_mac_address>
```
- To connect to a paired device:
```
connect <device_mac_address>
```
- To trust a device:
```
trust <device_mac_address>
```
Exit bluetoothctl:

When you're done, exit the bluetoothctl interactive shell by typing:
```
exit
```

This should enable Bluetooth and allow you to manage your Bluetooth devices via the command line.

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