增加些功能

shell/CommandList.cs

@@ -239,6 +239,9 @@ namespace CMLeonOS.shell
                 case "unalias":
                     shell.ProcessUnalias(args);
                     break;
+                case "logs":
+                    shell.ProcessLogs(args);
+                    break;
                 case "exportbackground":
                     shell.ProcessExportBackground(args);
                     break;

shell/Commands/LogsCommand.cs

@@ -0,0 +1,88 @@
+// The CMLeonOS Project (https://github.com/Leonmmcoset/CMLeonOS)
+// Copyright (C) 2025-present LeonOS 2 Developer Team
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+using System;
+using CMLeonOS.Logger;
+
+namespace CMLeonOS.Commands
+{
+    public static class LogsCommand
+    {
+        public static void ShowLogs()
+        {
+            try
+            {
+                var logs = Log.Logs;
+
+                if (logs == null || logs.Count == 0)
+                {
+                    Console.WriteLine("No logs available.");
+                    return;
+                }
+
+                Console.WriteLine($"Total logs: {logs.Count}");
+                Console.WriteLine();
+
+                int countToShow = Math.Min(logs.Count, 20);
+                int startIndex = logs.Count - countToShow;
+
+                for (int i = startIndex; i < logs.Count; i++)
+                {
+                    LogEntry entry = logs[i];
+                    string level = entry.Level switch
+                    {
+                        LogLevel.Debug => "DEBUG",
+                        LogLevel.Info => "INFO ",
+                        LogLevel.Warning => "WARN ",
+                        LogLevel.Error => "ERROR",
+                        LogLevel.Success => "SUCCESS",
+                        _ => "UNKNOWN"
+                    };
+
+                    string time = entry.Date.ToString("HH:mm:ss");
+                    string message = entry.Message.Length > 50 ? entry.Message.Substring(0, 50) + "..." : entry.Message;
+
+                    Console.ForegroundColor = GetLevelColor(entry.Level);
+                    Console.WriteLine($"[{time}] [{level}] [{entry.Source}] {message}");
+                    Console.ResetColor();
+                }
+
+                if (logs.Count > 20)
+                {
+                    Console.WriteLine();
+                    Console.WriteLine($"... and {logs.Count - 20} more logs not shown.");
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error reading logs: {ex.Message}");
+            }
+        }
+
+        private static ConsoleColor GetLevelColor(LogLevel level)
+        {
+            return level switch
+            {
+                LogLevel.Debug => ConsoleColor.Gray,
+                LogLevel.Info => ConsoleColor.Cyan,
+                LogLevel.Warning => ConsoleColor.Yellow,
+                LogLevel.Error => ConsoleColor.Red,
+                LogLevel.Success => ConsoleColor.Green,
+                _ => ConsoleColor.White
+            };
+        }
+    }
+}

shell/Shell.cs

@@ -425,7 +425,7 @@ namespace CMLeonOS
                 "cpass", "hostname", "ipconfig", "setdns", "setgateway", "nslookup",
                 "ping", "wget", "ftp", "tcpserver", "tcpclient", "lua", "lua2cla", "cla",
                 "branswe", "beep", "env", "whoami", "uptime", "alias",
-                "unalias", "base64", "testgui", "ps", "kill", "hex", "exportbackground"
+                "unalias", "base64", "testgui", "ps", "kill", "hex", "exportbackground", "logs"
             };
         }
 
@@ -1699,6 +1699,11 @@ namespace CMLeonOS
             Commands.ExportBackgroundCommand.ExportBackground(args);
         }
 
+        public void ProcessLogs(string args)
+        {
+            Commands.LogsCommand.ShowLogs();
+        }
+
         public void SetDnsServer(string args)
         {
             if (string.IsNullOrWhiteSpace(args))