Create auto-update-cron.sh

auto-update-cron.sh

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+#!/bin/bash
+
+# Script to add a cron job to check for and download the most recent version from this git repo
+
+# Runs cron job if exists otherwise creates cron job
+
+
+# Cron job
+# Get current version installed if installed otherwise stop
+
+# Check this git repo for most recent version if newer release download to /tmp otherwise stop
+
+# Stop any running instances of signal-desktop
+
+# Install and restart if instance was runnning