Add PID tracking to stop.sh (thanks IceBurst)

stop.sh

@@ -1,10 +1,41 @@
-#!/bin/sh
+#!/usr/bin/env bash
+
+# Check for color support
+if [ -t 1 ]; then
+	ncolors=$( tput colors )
+	if [ -n "${ncolors}" -a "${ncolors}" -ge 8 ]; then
+		if normal="$( tput sgr0 )"; then
+			# use terminfo names
+			red="$( tput setaf 1 )"
+			green="$( tput setaf 2)"
+		else
+			# use termcap names for FreeBSD compat
+			normal="$( tput me )"
+			red="$( tput AF 1 )"
+			green="$( tput AF 2)"
+		fi
+	fi
+fi
+
+# Track the pid if we can find it
+read pid 2>/dev/null <run.pid
+is_pid_valid=$?
 
 echo 'Calling GET /admin/stop on local Qortal node'
 if curl --url http://localhost:12391/admin/stop 1>/dev/null 2>&1; then
 	echo "Qortal node responded and should be shutting down"
+	if [ "${is_pid_valid}" -eq 0 ]; then
+		echo -n "Monitoring for Qortal node to end"
+		while s=`ps -p $pid -o stat=` && [[ "$s" && "$s" != 'Z' ]]; do
+			echo -n .
+			sleep 1
+		done
+		echo
+		echo "${green}Qortal ended gracefully${normal}"
+		rm -f run.pid
+	fi
 	exit 0
 else
-	echo "No response from Qortal node - not running?"
+	echo "${red}No response from Qortal node - not running?${normal}"
 	exit 1
 fi