Finished Batch + Minor improvements

include/cmd/cmd_batch.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "cmd/cmd_base.hpp"
+#include "fsh.hpp"
+
+namespace fsh {
+
+    class CmdBatch : public Command {
+
+      protected:
+        virtual void register_flags() override {
+            ArgFactory& factory = get_factory();
+            factory.add_input_rule();
+        }
+
+        virtual void run(std::istream& in, std::ostream& out, ArgManager& args) override {
+            std::string s;
+            while (std::getline(in, s)) { 
+                if(s == "") continue;
+                fsh::instance().run_line(s, util::cin, out); 
+            }
+        }
+    };
+
+}