auto-fix-qortal script for automated core update

This script will check the hash of the release version of Qortal (in a way that will surely be modified in the future) - It will then verify that the installed qortal.jar is the same hash as the new release. If so, it will exit.

If the installed qortal.jar is a DIFFERENT hash than release version, it will remove existing version, replace with new version, remove db, log files, update start script to use a version that uses max RAM for the JVM of 2.2GB, then start Qortal so that it will auto-bootstrap.

This is a VERY early and VERY 'rough' version of the script, but it works.

It needs a lot more checks to ensure it doesn't remove qortal with nothing to replace it, etc...

it NEEDS internet connectivity, and checks for that.

Many other additions will happen as well.

auto-fix-qortal.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+
+# Regular Colors
+BLACK='\033[0;30m'        # Black
+RED='\033[0;31m'          # Red
+GREEN='\033[0;32m'        # Green
+YELLOW='\033[0;33m'       # Yellow
+BLUE='\033[0;34m'         # Blue
+PURPLE='\033[0;35m'       # Purple
+CYAN='\033[0;36m'         # Cyan
+WHITE='\033[0;37m'        # White
+NC='\033[0m'              # No Color
+
+echo "${PURPLE} Checking hash of qortal.jar on local machine VS newest released qortal.jar on github ${NC}\n" 
+
+cd qortal
+md5sum qortal.jar > "local.md5"
+cd 
+
+
+echo "${RED} Grabbing newest released jar to check hash ${NC}\n"
+
+curl -L -O https://github.com/qortal/qortal/releases/latest/download/qortal.jar
+
+md5sum qortal.jar > "remote.md5"
+ 
+
+LOCAL=$(cat ~/qortal/local.md5) 
+REMOTE=$(cat ~/remote.md5)
+
+
+if [ "$LOCAL" = "$REMOTE" ]; then
+
+    echo "${BLUE} Your Qortal Core is up-to-date! No action needed. ${NC}\n" 
+    sleep 5 
+    rm ~/qortal.jar 
+    rm ~/qortal/local.md5 remote.md5 
+    exit 1
+
+else 
+	echo "${CYAN} Your Qortal Core is OUTDATED, refreshing and starting qortal... ${NC}\n"
+	cd qortal
+        killall -9 java
+        sleep 5
+        rm -R db
+        rm start.sh
+        rm qortal.jar
+        rm log.t*
+	mv ~/qortal.jar . 
+        rm ~/remote.md5 local.md5 
+	curl -L -O https://raw.githubusercontent.com/crowetic/QORTector-scripts/main/start-modified-memory-args.sh
+        mv start-modified-memory-args.sh start.sh
+        chmod +x start.sh
+        ./start.sh
+fi
+