Controlling Bluetooth LED Strip from Shell

# control Cheap Bluetooth LED Stip
# from Linux without App
# based on instructions found at
# https://linuxthings.co.uk/blog/control-an-elk-bledom-bluetooth-led-strip

sudo apt install python3-gattlib

# scan to get bluetooth Device's Address
sudo hcitool lescan

#mine is BE:58:94:03:02:0B

gatttool -b BE:58:50:00:54:15 --char-write-req -a 0x0009 -n 7e0004f00001ff00ef # POWER ON
gatttool -b BE:58:50:00:54:15 --char-write-req -a 0x0009 -n 7e000503ff000000ef # RED
gatttool -b BE:58:50:00:54:15 --char-write-req -a 0x0009 -n 7e0005030000ff00ef # BLUE
gatttool -b BE:58:50:00:54:15 --char-write-req -a 0x0009 -n 7e00050300ff0000ef # GREEN
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503ff550000ef # YELLOW
gatttool -b BE:58:50:00:54:15 --char-write-req -a 0x0009 -n 7e0004000000ff00ef # POWER OFF

gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503FFFFFF00ef # White
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503FF000000ef # Red
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050300FF0000ef # Lime
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e0005030000FF00ef # Blue
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503FFFF0000ef # Yellow
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050300FFFF00ef # Cyan
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503FF00FF00ef # Magenta
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e000503C0C0C000ef # Silver
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050380808000ef # Gray
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050380000000ef # Maroon
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050380800000ef # Olive
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050300800000ef # Green
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050380008000ef # Purple
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050300808000ef # Teal
gatttool -b BE:58:94:03:02:0B --char-write-req -a 0x0009 -n 7e00050300008000ef # Navy