diff --git a/src/Helper.php b/src/Helper.php
index 7383ba0..94622bb 100644
--- a/src/Helper.php
+++ b/src/Helper.php
@@ -19,30 +19,29 @@ class Helper
      * @param string $src
      * @param string $dst
      */
-    static function copyDirectory(
-        string $src,
-        string $dst
-    ): void {
+    static function copyDirectory(string $src, string $dst): void
+    {
+        if (is_link($src) || is_link($dst)) {
+            return;
+        }
+
         $dir = opendir($src);
-        mkdir($dst, 0777, true);
+        mkdir($dst, recursive: true);
         while (($file = readdir($dir)) !== false) {
-            if (
-                $file === static::CURRENT_DIRECTORY
-                || $file === static::PARENT_DIRECTORY
-            ) {
+            if ($file === static::CURRENT_DIRECTORY || $file === static::PARENT_DIRECTORY) {
                 continue;
             }
 
+            $newSrc = $src . DIRECTORY_SEPARATOR . $file;
+            $newDst = $dst . DIRECTORY_SEPARATOR . $file;
+
             if (is_dir($src . DIRECTORY_SEPARATOR . $file)) {
-                static::copyDirectory(
-                    $src . DIRECTORY_SEPARATOR . $file,
-                    $dst . DIRECTORY_SEPARATOR . $file
-                );
+                static::copyDirectory($newSrc, $newDst);
             } else {
-                copy(
-                    $src . DIRECTORY_SEPARATOR . $file,
-                    $dst . DIRECTORY_SEPARATOR . $file
-                );
+                if (is_link($newSrc) || is_link($newDst)) {
+                    continue;
+                }
+                copy($newSrc, $newDst);
             }
         }
         closedir($dir);
@@ -53,12 +52,16 @@ static function copyDirectory(
      *
      * @param string $path
      */
-    static function removeDirectory(string $path)
+    static function removeDirectory(string $path): void
     {
         if (substr($path, -1) !== DIRECTORY_SEPARATOR) {
             $path .= DIRECTORY_SEPARATOR;
         }
 
+        if (!is_dir($path) || is_link($path)) {
+            return;
+        }
+
         $directory = dir($path);
         while ($file = $directory->read()) {
             if (in_array($file, [static::CURRENT_DIRECTORY, static::PARENT_DIRECTORY])) {
@@ -66,7 +69,7 @@ static function removeDirectory(string $path)
             }
 
             $filePath = $path . $file;
-            if (is_dir($filePath)) {
+            if (is_dir($filePath) && !is_link($filePath)) {
                 static::removeDirectory($filePath);
             } else {
                 unlink($filePath);
diff --git a/src/Pattern/TimestampPattern.php b/src/Pattern/TimestampPattern.php
new file mode 100644
index 0000000..58390e2
--- /dev/null
+++ b/src/Pattern/TimestampPattern.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace Aternos\Thanos\Pattern;
+
+use Aternos\Thanos\Chunk\ChunkInterface;
+
+class TimestampPattern implements ChunkPatternInterface
+{
+    /**
+     * @param int $minTimestamp
+     * @param bool $removeUnknownChunks
+     */
+    public function __construct(
+        protected int  $minTimestamp,
+        protected bool $removeUnknownChunks,
+    )
+    {
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function matches(ChunkInterface $chunk): bool
+    {
+        $time = $chunk->getTimestamp();
+        return $time > $this->minTimestamp || ($time === -1 && !$this->removeUnknownChunks);
+    }
+
+    /**
+     * @return int
+     */
+    public function getMinTimestamp(): int
+    {
+        return $this->minTimestamp;
+    }
+
+    /**
+     * @param int $minTimestamp
+     * @return $this
+     */
+    public function setMinTimestamp(int $minTimestamp): TimestampPattern
+    {
+        $this->minTimestamp = $minTimestamp;
+        return $this;
+    }
+
+    /**
+     * @return bool
+     */
+    public function getRemoveUnknownChunks(): bool
+    {
+        return $this->removeUnknownChunks;
+    }
+
+    /**
+     * @param bool $removeUnknownChunks
+     * @return $this
+     */
+    public function setRemoveUnknownChunks(bool $removeUnknownChunks): TimestampPattern
+    {
+        $this->removeUnknownChunks = $removeUnknownChunks;
+        return $this;
+    }
+}