a way to run program with arguments

assets/tvdos/TVDOS.SYS

@@ -65,4 +65,10 @@ var GL = eval(filesystem.readAll("A"));
 
 // Boot script
 filesystem.open("A", "tvdos/command.js", "R");
-eval(filesystem.readAll("A"));
+let cmdsrc = filesystem.readAll("A");
+
+// app execution stub
+let prg = eval("let _appStub=function(exec_args){"+cmdsrc+"};_appStub;"); // making 'exec_args' a app-level global
+prg(undefined);
+//let testtest = prg(42);
+//println(testtest.test);

assets/tvdos/command.js

@@ -1,4 +1,4 @@
-const PROMPT_TEXT = ">";
+let PROMPT_TEXT = ">";
 let CURRENT_DRIVE = "A";
 
 let shell_pwd = [""];
@@ -15,6 +15,11 @@ function greet() {
 }
 
 
+let shell = {};
+shell.test = "command.js test string";
+if (exec_args !== undefined) return shell;
+
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
 println("Starting TVDOS...");
@@ -47,9 +52,10 @@ while (true) {
             println();
             try {
                 println("You entered: " + cmdbuf);
+
             }
             catch (e) {
-                println(e);
+                printerrln(e);
             }
             finally {
                 if (cmdbuf.trim().length > 0)
@@ -91,4 +97,6 @@ while (true) {
             }
         }
     }
-}
+}
+
+return 0;