Everything but exit works.

source/Cosmos/Cosmos.Kernel/TextScreen.cs

@@ -30,6 +30,8 @@ namespace Cosmos.Kernel {
 
         public static void Clear() {
             HW.Text.Clear();
+            CurrentChar = 0;
+            CurrentLine = 0;
         }
 
         public static void WriteChar(char aChar) {

source/Cosmos/Cosmos.Shell.Console/Commands/BaseCommand.cs

@@ -10,10 +10,21 @@ namespace Cosmos.Shell.Console.Commands {
 		/// <summary>
 		/// Gets the name of the command (must be lowercase).
 		/// </summary>
-		public abstract string Name {
-			get;
-		}
+        public abstract string Name
+        {
+            get;
+        }
+
+        /// <summary>
+        /// Gets the summary for the command.
+        /// </summary>
+        public abstract string Summary
+        {
+            get;
+        }
 
 		public abstract void Execute(string param);
+
+        public abstract void Help();
 	}
 }

source/Cosmos/Cosmos.Shell.Console/Commands/ClsCommand.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Shell.Console.Commands
+{
+    public class ClsCommand : CommandBase
+    {
+        public override string Name
+        {
+            get { return "cls"; }
+        }
+
+        public override string Summary
+        {
+            get { return "Clears the screen."; }
+        }
+
+        public override void Execute(string param)
+        {
+            System.Console.Clear();
+        }
+
+        public override void Help()
+        {
+            System.Console.WriteLine("cls");
+            System.Console.WriteLine(" Clears the screen.");
+        }
+    }
+}

source/Cosmos/Cosmos.Shell.Console/Commands/DirCommand.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Shell.Console.Commands
+{
+    public class DirCommand : CommandBase
+    {
+        public override string Name
+        {
+            get { return "dir"; }
+        }
+
+        public override string Summary
+        {
+            get { return "Lists the files in the current directory."; }
+        }
+
+        public override void Execute(string param)
+        {
+            Hardware.Storage.ATA xDrive = new Cosmos.Hardware.Storage.ATA(0, 0);
+			Cosmos.Kernel.FileSystem.Ext2 xExt2 = new Cosmos.Kernel.FileSystem.Ext2 (xDrive);
+            xExt2.Initialize();
+
+            string[] files = xExt2.GetDirectoryEntries(new string[0]);
+            for (int i = 0; i < files.Length; i++)
+                System.Console.WriteLine(files[i]);
+        }
+
+        public override void Help()
+        {
+            System.Console.WriteLine("dir");
+            System.Console.WriteLine("  Lists the files in the current directory.");
+        }
+    }
+}

source/Cosmos/Cosmos.Shell.Console/Commands/EchoCommand.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Shell.Console.Commands
+{
+    public class EchoCommand : CommandBase
+    {
+        public override string Name
+        {
+            get { return "echo"; }
+        }
+
+        public override string Summary
+        {
+            get { return "Duplicates text you enter to the console."; }
+        }
+
+        public override void Execute(string param)
+        {
+            System.Console.WriteLine(param);
+            System.Console.WriteLine();
+        }
+
+        public override void Help()
+        {
+            System.Console.WriteLine("echo [text]");
+            System.Console.WriteLine("  Duplicates text you enter to the console.");
+            System.Console.WriteLine("  [text]: The text to duplicate.");
+        }
+    }
+}

source/Cosmos/Cosmos.Shell.Console/Commands/ExitCommand.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Shell.Console.Commands
+{
+    public class ExitCommand : CommandBase
+    {
+        public override string Name
+        {
+            get { return "exit"; }
+        }
+
+        public override string Summary
+        {
+            get { return "Closes the console."; }
+        }
+
+        public delegate void SimpleDelegate();
+
+        private SimpleDelegate _exit;
+
+        public ExitCommand(SimpleDelegate exit)
+        {
+            _exit = exit;
+        }
+
+        public override void Execute(string param)
+        {
+            _exit();
+        }
+
+        public override void Help()
+        {
+            System.Console.WriteLine("exit");
+            System.Console.WriteLine(" Closes the console.");
+        }
+    }
+}

source/Cosmos/Cosmos.Shell.Console/Commands/HelpCommand.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Cosmos.Shell.Console.Commands
+{
+    public class HelpCommand : CommandBase
+    {
+        public override string Name
+        {
+            get { return "help"; }
+        }
+
+        public HelpCommand(List<CommandBase> commands)
+        {
+            _commands = commands;
+        }
+
+        private List<CommandBase> _commands;
+
+        public override void Execute(string param)
+        {
+            if (param.CompareTo("") == 0)
+                DisplayCommands();
+            else
+                CommandHelp(param);
+        }
+
+        private void CommandHelp(string command)
+        {
+            bool found = false;
+            for (int i = 0; i < _commands.Count; i++)
+            {
+                if (_commands[i].Name.CompareTo(command) == 0)
+                {
+                    found = true;
+                    _commands[i].Help();
+                    System.Console.WriteLine();
+                    break;
+                }
+            }
+
+            if (!found)
+            {
+                System.Console.ForegroundColor = ConsoleColor.Red;
+                System.Console.Write("The command ");
+                System.Console.Write(command);
+                System.Console.WriteLine(" is not supported. Please type help for more information.");
+                System.Console.ForegroundColor = ConsoleColor.White;
+                System.Console.WriteLine();
+            }
+        }
+
+        private void DisplayCommands()
+        {
+            System.Console.WriteLine("Supported Commands:");
+            for (int i = 0; i < _commands.Count; i++)
+            {
+                System.Console.ForegroundColor = ConsoleColor.Red;
+                System.Console.Write("  ");
+                System.Console.Write(_commands[i].Name);
+                System.Console.Write(":  ");
+                System.Console.ForegroundColor = ConsoleColor.White;
+                System.Console.WriteLine(_commands[i].Summary);
+            }
+            System.Console.WriteLine("Please type help [command] for more information.");
+            System.Console.WriteLine();
+            
+        }
+
+        public override void Help()
+        {
+            System.Console.WriteLine("help [command]");
+            System.Console.WriteLine("  Gets help on a specific command.");
+            System.Console.WriteLine("  [command]:The command to look up.");
+        }
+
+        public override string Summary
+        {
+            get { return "Gets help on a specific command."; }
+        }
+    }
+}

source/Cosmos/Cosmos.Shell.Console/Commands/TypeCommand.cs

@@ -40,5 +40,17 @@ namespace Cosmos.Shell.Console.Commands {
             String s = new String(xChars);
             System.Console.WriteLine(s);
 		}
-	}
+
+        public override void Help()
+        {
+            System.Console.WriteLine("type [filename]");
+            System.Console.WriteLine("  Types the specified file out to the console window.");
+            System.Console.WriteLine("  [filename]: The name of the file.");
+        }
+
+        public override string Summary
+        {
+            get { return "Types the specified file out to the console window."; }
+        }
+    }
 }

source/Cosmos/Cosmos.Shell.Console/Cosmos.Shell.Console.csproj

@@ -42,6 +42,11 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Commands\ClsCommand.cs" />
+    <Compile Include="Commands\DirCommand.cs" />
+    <Compile Include="Commands\EchoCommand.cs" />
+    <Compile Include="Commands\ExitCommand.cs" />
+    <Compile Include="Commands\HelpCommand.cs" />
     <Compile Include="Commands\TypeCommand.cs" />
     <Compile Include="Commands\BaseCommand.cs" />
     <Compile Include="Program.cs" />

source/Cosmos/Cosmos.Shell.Console/Prompter.cs

@@ -25,7 +25,13 @@ namespace Cosmos.Shell.Console {
 
 		public override void Initialize() {
             _commands = new List<Cosmos.Shell.Console.Commands.CommandBase>();
+            _commands.Add(new Commands.ClsCommand());
+            _commands.Add(new Commands.DirCommand());
+            _commands.Add(new Commands.EchoCommand());
+            _commands.Add(new Commands.ExitCommand(Stop));
+            _commands.Add(new Commands.HelpCommand(_commands));
             _commands.Add(new Commands.TypeCommand());
+            
 
             while (running)
             {
@@ -45,16 +51,26 @@ namespace Cosmos.Shell.Console {
                     param = line.Substring(index + 1);
                 }
 
+                bool found = false;
                 for (int i = 0; i < _commands.Count; i++)
                 {
-
                     if (_commands[i].Name.CompareTo(command) == 0)
                     {
+                        found = true;
                         _commands[i].Execute(param);
                         break;
                     }
                 }
-                
+
+                if (!found)
+                {
+                    System.Console.ForegroundColor = ConsoleColor.Red;
+                    System.Console.Write("The command ");
+                    System.Console.Write(command);
+                    System.Console.WriteLine(" is not supported. Please type help for more information.");
+                    System.Console.ForegroundColor = ConsoleColor.White;
+                    System.Console.WriteLine();
+                }
             }
 		}