created updater

README.md

@@ -86,6 +86,25 @@ The installation script automates the following steps:
 
 After installation is complete, the script will provide instructions to start the service manually or to run the application in its interactive terminal mode.
 
+---
+
+## 🔄 Updating
+
+If you installed TimeTurner by cloning the repository with `git`, you can use the `update.sh` script to easily update to the latest version.
+
+**Note**: This script will not work if you used the `curl` one-line command for installation, as that method does not create a Git repository.
+
+To run the update script, navigate to the `NTP-Timeturner-main` directory and run:
+```bash
+chmod +x update.sh && ./update.sh
+```
+
+The update script automates the following:
+1.  Pulls the latest code from the `main` branch on GitHub.
+2.  Rebuilds the application binary.
+3.  Copies the new binary to `/opt/timeturner/`.
+4.  Restarts the `timeturner` service to apply the changes.
+
 ---
 ## 🕰️ Chrony NTP 
 ```bash

update.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+echo "--- TimeTurner Update Script ---"
+
+# 1. Fetch the latest changes from the git repository
+echo "🔄 Pulling latest changes from GitHub..."
+git pull origin main
+
+# 2. Rebuild the release binary
+echo "📦 Building release binary with Cargo..."
+cargo build --release
+
+# 3. Stop the currently running service to release the file lock
+echo "🛑 Stopping TimeTurner service..."
+sudo systemctl stop timeturner.service
+
+# 4. Copy the new binary to the installation directory
+echo "🚀 Deploying new binary..."
+sudo cp target/release/timeturner /opt/timeturner/timeturner
+
+# 5. Restart the service with the new binary
+echo "✅ Restarting TimeTurner service..."
+sudo systemctl restart timeturner.service
+
+echo ""
+echo "Update complete. To check the status of the service, run:"
+echo "  systemctl status timeturner.service"