Continued work.

File.cpp

@@ -39,5 +39,9 @@ namespace coreutils {
    void File::write(std::string data) {
       ::write(fd, data.c_str(), data.length());
    }
-   
+
+   std::string File::asString() {
+      return std::string(buffer, size);
+   }
+      
 }