Finished Batch + Minor improvements

include/cmd/cmd_echo.hpp

@@ -14,9 +14,11 @@ namespace fsh {
 
         virtual void run(std::istream& in, std::ostream& out, ArgManager& args) override {
             std::string s;
-            std::string o;
-            while (std::getline(in, s)) { o += s + "\n"; }
-            out << o;
+            char c;
+            while (in.get(c)) {
+                s+=c;
+            }
+            out << s;
         }
     };