diff --git a/src/Command/SyncScriptMappingsCommand.php b/src/Command/SyncScriptMappingsCommand.php
new file mode 100644
index 0000000..cfcee0e
--- /dev/null
+++ b/src/Command/SyncScriptMappingsCommand.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Command;
+
+use App\Exception\GitSyncFailedException;
+use App\Repository\ScriptMappingRepository;
+use App\Service\GitSynchronizer;
+use Doctrine\ORM\EntityManagerInterface;
+use Symfony\Component\Console\Attribute\AsCommand;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+
+#[AsCommand(name: 'app:mappings:sync', description: 'Synchronize all script mappings.')]
+final class SyncScriptMappingsCommand extends Command
+{
+    public function __construct(
+        private readonly ScriptMappingRepository $scriptMappingRepository,
+        private readonly GitSynchronizer $gitSynchronizer,
+        private readonly EntityManagerInterface $entityManager,
+    ) {
+        parent::__construct();
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        $io = new SymfonyStyle($input, $output);
+        $synchronized = 0;
+        $failed = 0;
+
+        foreach ($this->scriptMappingRepository->findAllOrderedByPublicPath() as $mapping) {
+            try {
+                $this->gitSynchronizer->sync($mapping);
+                ++$synchronized;
+            } catch (GitSyncFailedException) {
+                ++$failed;
+                $io->error(sprintf('Mapping "%s" synchronization failed.', $mapping->getPublicPath()));
+            } finally {
+                $this->entityManager->flush();
+            }
+        }
+
+        $summary = sprintf('%d mapping(s) synchronized, %d failed.', $synchronized, $failed);
+        if ($failed === 0) {
+            $io->success($summary);
+
+            return Command::SUCCESS;
+        }
+
+        $io->warning($summary);
+
+        return Command::FAILURE;
+    }
+}
diff --git a/tests/Command/SyncScriptMappingsCommandTest.php b/tests/Command/SyncScriptMappingsCommandTest.php
new file mode 100644
index 0000000..97ed373
--- /dev/null
+++ b/tests/Command/SyncScriptMappingsCommandTest.php
@@ -0,0 +1,139 @@
+<?php
+
+namespace App\Tests\Command;
+
+use App\Entity\ScriptMapping;
+use App\Tests\DatabaseWebTestCase;
+use Symfony\Bundle\FrameworkBundle\Console\Application;
+use Symfony\Component\Console\Tester\CommandTester;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\Process\Process;
+
+final class SyncScriptMappingsCommandTest extends DatabaseWebTestCase
+{
+    private Filesystem $filesystem;
+    private string $workDir;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->filesystem = new Filesystem();
+        $this->workDir = sys_get_temp_dir().'/get-installer-bootstrap-command-test-'.bin2hex(random_bytes(6));
+        $this->filesystem->mkdir($this->workDir);
+    }
+
+    protected function tearDown(): void
+    {
+        $this->filesystem->remove($this->workDir);
+
+        parent::tearDown();
+    }
+
+    public function testCommandSynchronizesEveryMapping(): void
+    {
+        $firstRepositoryDir = $this->createRepository('first', [
+            'install.sh' => "#!/usr/bin/env bash\nprintf 'first'\n",
+        ]);
+        $secondRepositoryDir = $this->createRepository('second', [
+            'install.sh' => "#!/usr/bin/env bash\nprintf 'second'\n",
+        ]);
+
+        $firstMapping = $this->mapping('mcp/first/install.sh', $firstRepositoryDir);
+        $secondMapping = $this->mapping('mcp/second/install.sh', $secondRepositoryDir);
+        $this->entityManager->persist($firstMapping);
+        $this->entityManager->persist($secondMapping);
+        $this->entityManager->flush();
+
+        $application = new Application(static::$kernel);
+        self::assertTrue($application->has('app:mappings:sync'));
+
+        $commandTester = new CommandTester($application->find('app:mappings:sync'));
+        $commandTester->execute([]);
+
+        self::assertSame(0, $commandTester->getStatusCode());
+        self::assertStringContainsString('2 mapping(s) synchronized, 0 failed.', $commandTester->getDisplay());
+
+        $this->entityManager->clear();
+        $syncedFirstMapping = $this->entityManager->getRepository(ScriptMapping::class)->find($firstMapping->getId());
+        $syncedSecondMapping = $this->entityManager->getRepository(ScriptMapping::class)->find($secondMapping->getId());
+
+        self::assertInstanceOf(ScriptMapping::class, $syncedFirstMapping);
+        self::assertInstanceOf(ScriptMapping::class, $syncedSecondMapping);
+        self::assertSame(ScriptMapping::SYNC_STATUS_SYNCED, $syncedFirstMapping->getLastSyncStatus());
+        self::assertSame(ScriptMapping::SYNC_STATUS_SYNCED, $syncedSecondMapping->getLastSyncStatus());
+    }
+
+    public function testCommandContinuesAfterMappingFailureAndReturnsFailure(): void
+    {
+        $failingRepositoryDir = $this->createRepository('failing', [
+            'install.sh' => "#!/usr/bin/env bash\nprintf 'missing target'\n",
+        ]);
+        $workingRepositoryDir = $this->createRepository('working', [
+            'install.sh' => "#!/usr/bin/env bash\nprintf 'working'\n",
+        ]);
+
+        $failingMapping = $this->mapping('mcp/a-failing/install.sh', $failingRepositoryDir)
+            ->setRepositoryFilePath('missing.sh');
+        $workingMapping = $this->mapping('mcp/b-working/install.sh', $workingRepositoryDir);
+        $this->entityManager->persist($failingMapping);
+        $this->entityManager->persist($workingMapping);
+        $this->entityManager->flush();
+
+        $application = new Application(static::$kernel);
+        self::assertTrue($application->has('app:mappings:sync'));
+
+        $commandTester = new CommandTester($application->find('app:mappings:sync'));
+        $commandTester->execute([]);
+
+        self::assertSame(1, $commandTester->getStatusCode());
+        self::assertStringContainsString('1 mapping(s) synchronized, 1 failed.', $commandTester->getDisplay());
+
+        $this->entityManager->clear();
+        $syncedFailingMapping = $this->entityManager->getRepository(ScriptMapping::class)->find($failingMapping->getId());
+        $syncedWorkingMapping = $this->entityManager->getRepository(ScriptMapping::class)->find($workingMapping->getId());
+
+        self::assertInstanceOf(ScriptMapping::class, $syncedFailingMapping);
+        self::assertInstanceOf(ScriptMapping::class, $syncedWorkingMapping);
+        self::assertSame(ScriptMapping::SYNC_STATUS_FAILED, $syncedFailingMapping->getLastSyncStatus());
+        self::assertSame(ScriptMapping::SYNC_STATUS_SYNCED, $syncedWorkingMapping->getLastSyncStatus());
+    }
+
+    private function mapping(string $publicPath, string $repositoryDir): ScriptMapping
+    {
+        return (new ScriptMapping())
+            ->setPublicPath($publicPath)
+            ->setRepositoryUrl($repositoryDir)
+            ->setGitRef('main')
+            ->setRepositoryFilePath('install.sh')
+            ->setActive(true);
+    }
+
+    /** @param array<string, string> $files */
+    private function createRepository(string $name, array $files): string
+    {
+        $repositoryDir = $this->workDir.'/'.$name;
+        $this->filesystem->mkdir($repositoryDir);
+
+        foreach ($files as $path => $content) {
+            $fullPath = $repositoryDir.'/'.$path;
+            $this->filesystem->mkdir(dirname($fullPath));
+            file_put_contents($fullPath, $content);
+        }
+
+        $this->runGit(['init'], $repositoryDir);
+        $this->runGit(['config', 'user.email', 'tests@example.com'], $repositoryDir);
+        $this->runGit(['config', 'user.name', 'Tests'], $repositoryDir);
+        $this->runGit(['add', '.'], $repositoryDir);
+        $this->runGit(['commit', '-m', 'Initial commit'], $repositoryDir);
+        $this->runGit(['branch', '-M', 'main'], $repositoryDir);
+
+        return $repositoryDir;
+    }
+
+    /** @param list<string> $arguments */
+    private function runGit(array $arguments, string $cwd): void
+    {
+        (new Process(['git', ...$arguments], $cwd))->mustRun();
+    }
+}