btsw/README.md

**NOTICE**: This repository has been moved to [https://code.adriano.fyi/me/btsw](https://code.adriano.fyi/me/btsw). Microsoft has shown little interest in stewarding what was once the best and largest open source community. This small act of migration is my way showing that we don't all support Microsoft's disinterest.

# btsw

A tiny Linux CLI that quickly connects and disconnects paired bluetooth devices.

- List Bluetooth adapters
- List paired devices on any bluetooth adapter
- Connect/disconnect paired devices by id 

btsw talks to BlueZ over the system D‑Bus using [github.com/godbus/dbus](github.com/godbus/dbus).

## Requirements

- Linux with BlueZ running (bluetoothd on the system bus)

Note On NixOS. Enable Bluetooth in your system configuration:
> hardware.bluetooth.enable = true

## Install

### Nix flakes

Run with flakes:
- `nix run https://flakes.adriano.fyi/btsw -- adapters`
- `nix run https://flakes.adriano.fyi/btsw -- devices`
- `nix run https://flakes.adriano.fyi/btsw -- connect 0`
- `nix run https://flakes.adriano.fyi/btsw -- disconnect 4`

### Flake input

```
inputs.btsw = {
  url = "https://flakes.adriano.fyi/btsw";
  inputs.nixpkgs.follows = "nixpkgs";
};
```

### Build from source (Go)

- `git clone http://github.com/acaloiaro/btsw`
- Build:
  - `go build -o btsw .`
- Optionally install to your PATH:
  - `install -m 0755 btsw /usr/local/bin/`

## Usage

```
Usage:
  btsw [--adapter=hciX] <command> [args]

Commands:
  adapters                List all available Bluetooth adapters.
  devices                 List paired devices on the selected adapter (default: hci0).
  connect <id>            Connect to a paired device by its numeric ID (from 'devices').
  disconnect <id>         Disconnect from a paired device by its numeric ID (from 'devices').

Options:
  --adapter=hciX          Specify which Bluetooth adapter to use (default: hci0).
  --version               Print the version. 

Examples:
  btsw adapters               # List available bluetooth adapaters 
  btsw devices                # List available devices on the chosen bluetooth adapter 
  btsw --adapter=hci1 devices # List devics on hci1
  btsw connect 0              # Connect to device 0 (from 'devices' list)
  btsw disconnect 1           # Disconnect from device 1 (from 'devics' list)
```

Notes:
- The device index is stable per run, sorted by MAC address.
- Only paired devices are shown and targetable.

## Troubleshooting

- No adapters found:
  - Ensure bluetoothd is running (systemctl status bluetooth)
  - On NixOS: hardware.bluetooth.enable = true
- No paired devices:
  - Pair first using bluetoothctl (scan on, pair, trust)
- Permission denied / not authorized:
  - Some systems require Polkit authorization for connect/disconnect
  - Try from a logged-in user session; avoid sudo unless necessary

## Acknowledgments

- Uses [github.com/godbus/dbus](github.com/godbus/dbus) to speak to BlueZ on the system D‑Bus.