#首先确定硬件上有支持蓝牙的设备，插入蓝牙发射器。然后运行如下命令，就可以开到我们的蓝牙设备了：
lsusb
[root@localhost ~]# lsusb
Bus 002 Device 003: ID 8087:07da Intel Corp.
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 064e:8125 Suyin Corp.
Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) #蓝牙设备
Bus 003 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
#列出笔记本已有的蓝牙设备 本例 为hci1
[root@localhost ~]# hciconfig
hci1: Type: Primary Bus: USB
BD Address: xx:xx:xx:xx:xx:xx ACL MTU: 310:10 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:471023 acl:10676 sco:0 events:18199 errors:0
TX bytes:3242200 acl:22027 sco:0 commands:274 errors:0
#激活该设备
[root@localhost ~]# hciconfig hci1 up
#扫描硬件信息
[root@localhost ~]# hcitool scan
Scanning ...
A4:50:46:8A:7C:79 小米手机
94:87:E0:E5:22:D9 红米手机
xx:xx:xx:xx:xx 魅蓝 6T#要连接的设备
#绑定
sudo rfcomm bind /dev/rfcomm0 xx:xx:xx:xx:xx
#连接
sudo cat >/dev/rfcomm0
#删除
sudo rfcomm release /dev/rfcomm0