First version

src/CommandShow.php

@@ -0,0 +1,40 @@
+<?php
+namespace App;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Helper\Table;
+
+use Symfony\Component\Yaml\Yaml;
+use Symfony\Component\Yaml\Exception\ParseException;
+
+class CommandShow extends Command
+{
+    static $defaultName = "show";
+    static $defaultDescription = "Show all backup entries";
+
+    protected function configure(): void
+    {
+        $this->addArgument('config', InputArgument::OPTIONAL, 'Configuration file', "config.yml");
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $output->writeln('Reading from: '.$input->getArgument('config'));
+        try {
+            $config = Yaml::parseFile($input->getArgument('config'));
+        } catch (ParseException $exception) {
+            $output->writeln('Unable to parse the YAML string: '. $exception->getMessage());
+        }
+        $table = new Table($output);
+        $table
+            ->setHeaders(['Description', 'Source', 'Destination'])
+            ->setRows($config['backup']);
+        ;
+        $table->render();        
+
+        return Command::SUCCESS;
+    }
+}