Script for Mac OSX to Restart Bluetooth service & Reconnect all recently paired devices

bluetooth-restart.sh

#!/bin/bash

echo "Restarting bluetooth service..."
blueutil -p 0 && sleep 1 && blueutil -p 1

echo "Waiting bluetooth service to be restored..."
until blueutil -p | grep "1" >/dev/null; do sleep 1; done

echo "Searching for devices not connected..."
devices=($(blueutil --paired | grep "not connected" | awk -F '[ ,]' '{print $2}'))
echo "Found ${#devices[@]} recently paired devices not connected"

for device in ${devices[@]}; do
    for retry in {1..5}; do	
    	echo "Trying to connect to ${device} ..."
        if blueutil --connect ${device}; then break; fi
        echo "Failed to connect to ${device}"
        sleep 1
    done
done

Requirements: homebrew (https://brew.sh/) and blueutil (https://github.com/toy/blueutil) installed:

$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
$ brew install blueutil

Here's another version adapted from above that selects only recently paired devices (within the last day), and also prints out the device name. Note that the script requires a recent version of blueutil that can output JSON.

#!/bin/bash

# Restart the Bluetooth stack on macOS
#
# Adapted from https://gist.github.com/thiagoghisi/50c3ba835ea72cdb0318fb3306fd2c76
# See discussion at https://gist.github.com/nicolasembleton/afc19940da26716f8e90

# ensure blueutil and jq are installed
for bin in blueutil jq; do
  if ! hash $bin 2> /dev/null; then
    echo >&2 "Please install \"$_\" first!"
    exit 1
  fi
done

echo 'Restarting the Bluetooth service...'
blueutil -p 0 && sleep 1 && blueutil -p 1

echo 'Waiting for service to be restored...'
until [[ `blueutil -p` == 1 ]]; do sleep 1; done

echo 'Searching for recently paired devices...'
_IFS=$IFS; IFS=$'\n'
# jq expression returns lines: <address> <name>
devices=($(blueutil --recent --format json | jq -r 'def daysAgo(days): (now | floor) - (days * 86400); daysAgo(1) as $recent | .[] | select((.recentAccessDate | sub("[-+]\\d{2}:\\d{2}$"; "Z") | fromdate) > $recent and .paired and (.connected | not)) | .address + " " + .name'))
echo "Found ${#devices[@]} paired device(s) not connected."

for dev in ${devices[@]}; do
  addr=$(echo "$dev" | colrm 18)
  name=$(echo "$dev" | colrm 1 18)
  for retry in {1..3}; do
    echo "Trying to connect to ${addr}: ${name}..."
    if blueutil --connect ${addr} 2> /dev/null; then break; fi
    [[ $retry == 3 ]] && echo "FAILED to connect to ${addr}: ${name}."
    sleep 1
  done
done

IFS=$_IFS