diff --git a/src/.editorconfig b/src/.editorconfig
new file mode 100644
index 0000000..9b11293
--- /dev/null
+++ b/src/.editorconfig
@@ -0,0 +1,41 @@
+[*]
+indent_style = space
+indent_size = 4
+tab_width = 4
+
+
+# ReSharper properties
+resharper_align_linq_query = true
+resharper_align_multiline_argument = true
+resharper_align_multiline_array_and_object_initializer = true
+resharper_align_multiline_binary_patterns = true
+resharper_align_multiline_calls_chain = true
+resharper_align_multiline_extends_list = true
+resharper_align_multiline_parameter = true
+resharper_align_multiline_property_pattern = true
+resharper_align_multiline_switch_expression = true
+resharper_align_multiple_declaration = true
+resharper_align_multline_type_parameter_constrains = true
+resharper_align_multline_type_parameter_list = true
+resharper_align_tuple_components = true
+resharper_allow_comment_after_lbrace = true
+resharper_csharp_empty_block_style = together_same_line
+resharper_csharp_outdent_commas = true
+resharper_csharp_stick_comment = false
+resharper_csharp_wrap_before_comma = true
+resharper_indent_nested_foreach_stmt = true
+resharper_indent_nested_for_stmt = true
+resharper_indent_nested_while_stmt = true
+resharper_indent_preprocessor_if = usual_indent
+resharper_indent_preprocessor_other = usual_indent
+resharper_int_align = true
+resharper_keep_existing_arrangement = false
+resharper_place_linq_into_on_new_line = false
+resharper_place_simple_switch_expression_on_single_line = true
+resharper_wrap_before_eq = true
+resharper_wrap_chained_method_calls = chop_if_long
+resharper_wrap_switch_expression = chop_if_long
+
+# Microsoft .NET properties
+csharp_indent_braces = false
+csharp_new_line_before_open_brace = local_functions, methods, types
\ No newline at end of file
diff --git a/src/Convert2Lf/Main.cs b/src/Convert2Lf/Main.cs
new file mode 100644
index 0000000..eb6b801
--- /dev/null
+++ b/src/Convert2Lf/Main.cs
@@ -0,0 +1,113 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace Dot.Convert2Lf;
+
+public sealed class Main : Tool<Option>, IDisposable
+{
+    private                 int              _breakCnt;
+    private                 bool             _disposed;
+    private static readonly object           _lockObj = new();
+    private                 int              _procedCnt;
+    private                 int              _replaceCnt;
+    private                 ChildProgressBar _step2Bar;
+    private                 int              _totalCnt;
+    public Main(Option opt) : base(opt) { }
+
+
+    ~Main()
+    {
+        Dispose(false);
+    }
+
+    private void Dispose(bool disposing)
+    {
+        if (_disposed) return;
+        if (disposing) _step2Bar?.Dispose();
+        _disposed = true;
+    }
+
+    private void FileHandle(string file)
+    {
+        _step2Bar.Tick();
+        ShowMessage(1, 0, 0);
+
+        var tmpFile    = $"{file}.tmp";
+        var isReplaced = false;
+        var isBin      = false;
+        int data;
+
+        using (var fsr = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
+            using var fsw = new FileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
+
+            while ((data = fsr.ReadByte()) != -1) {
+                switch (data) {
+                    case 0x0d when fsr.ReadByte() == 0x0a: // crlf windows
+                        fsw.WriteByte(0x0a);
+                        isReplaced = true;
+                        continue;
+                    case 0x0d: //cr macos
+                        fsw.WriteByte(0x0a);
+                        fsr.Seek(-1, SeekOrigin.Current);
+                        isReplaced = true;
+                        continue;
+                    case 0x00 or 0xff: //非文本文件
+                        isBin = true;
+                        break;
+                    default:
+                        fsw.WriteByte((byte)data);
+                        continue;
+                }
+
+                break;
+            }
+        }
+
+
+        if (isReplaced && !isBin) {
+            MoveFile(tmpFile, file);
+
+            ShowMessage(0, 1, 0);
+        }
+        else {
+            File.Delete(tmpFile);
+            ShowMessage(0, 0, 1);
+        }
+    }
+
+
+    private void ShowMessage(int procedCnt, int replaceCnt, int breakCnt)
+    {
+        lock (_lockObj) {
+            _procedCnt        += procedCnt;
+            _replaceCnt       += replaceCnt;
+            _breakCnt         += breakCnt;
+            _step2Bar.Message =  $"已处理：{_procedCnt}/{_totalCnt}，替换：{_replaceCnt}，跳过：{_breakCnt}";
+        }
+    }
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
+    public override void Run()
+    {
+        if (!Directory.Exists(Opt.Path)) throw new ArgumentException(nameof(Opt.Path), $"指定的路径“{Opt.Path}”不存在");
+
+
+        using var step1Bar = new IndeterminateProgressBar("查找文件...", DefaultProgressBarOptions);
+
+
+        var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
+        _totalCnt = fileList.Count();
+
+        step1Bar.Message = "查找文件...OK";
+        step1Bar.Finished();
+
+        _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
+
+        Parallel.ForEach(fileList, FileHandle);
+    }
+}
\ No newline at end of file
diff --git a/src/Convert2Lf/Option.cs b/src/Convert2Lf/Option.cs
new file mode 100644
index 0000000..35a84b7
--- /dev/null
+++ b/src/Convert2Lf/Option.cs
@@ -0,0 +1,11 @@
+namespace Dot.Convert2Lf;
+
+[Verb("convert-lf", HelpText = "换行符转换为lf")]
+public class Option : IOption
+{
+    [Option('f', "filter", Required = false, HelpText = "文件通配符", Default = "*.*")]
+    public string Filter { get; set; } //normal options here
+
+    [Option('p', "path", Required = false, HelpText = "要处理的目录路径", Default = ".")]
+    public string Path { get; set; }
+}
\ No newline at end of file
diff --git a/src/Random/Main.cs b/src/Random/Main.cs
new file mode 100644
index 0000000..ef55cda
--- /dev/null
+++ b/src/Random/Main.cs
@@ -0,0 +1,66 @@
+using System.Text.RegularExpressions;
+using NSExt.Extensions;
+using TextCopy;
+
+namespace Dot.Random;
+
+public sealed partial class Main : Tool<Option>
+{
+    private readonly char[][] _charTable = {
+                                               "0123456789".ToCharArray() //
+                                             , "abcdefghijklmnopqrstuvwxyz".ToCharArray()
+                                             , "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray()
+                                             , "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~".ToCharArray()
+                                           };
+
+
+    public Main(Option opt) : base(opt) { }
+
+    [GeneratedRegex("[a-z]")]
+    private static partial Regex RegexLowerCaseLetter();
+
+    [GeneratedRegex("\\d")]
+    private static partial Regex RegexNumber();
+
+    [GeneratedRegex("[^\\da-zA-Z]")]
+    private static partial Regex RegexSpecialCharacter();
+
+    [GeneratedRegex("[A-Z]")]
+    private static partial Regex RegexUpperCaseLetter();
+
+    public override void Run()
+    {
+        unsafe {
+            var pSource   = stackalloc char[_charTable.Sum(x => x.Length)];
+            var pDest     = stackalloc char[Opt.Length];
+            var sourceLen = 0;
+
+            if (Opt.Type.HasFlag(Option.GenerateTypes.Number))
+                foreach (var c in _charTable[0])
+                    *(pSource + sourceLen++) = c;
+
+
+            if (Opt.Type.HasFlag(Option.GenerateTypes.LowerCaseLetter))
+                foreach (var c in _charTable[1])
+                    *(pSource + sourceLen++) = c;
+
+            if (Opt.Type.HasFlag(Option.GenerateTypes.UpperCaseLetter))
+                foreach (var c in _charTable[2])
+                    *(pSource + sourceLen++) = c;
+
+
+            if (Opt.Type.HasFlag(Option.GenerateTypes.SpecialCharacter))
+                foreach (var c in _charTable[3])
+                    *(pSource + sourceLen++) = c;
+
+
+            var randScope = new[] { 0, sourceLen };
+            for (var i = 0; i != Opt.Length; ++i) //
+                *(pDest + i) = *(pSource + randScope.Rand());
+
+            var result = new string(pDest, 0, Opt.Length);
+            ClipboardService.SetText(result);
+            Console.WriteLine($"已复制到剪贴板：{result}");
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Random/Option.cs b/src/Random/Option.cs
new file mode 100644
index 0000000..a1a524f
--- /dev/null
+++ b/src/Random/Option.cs
@@ -0,0 +1,21 @@
+namespace Dot.Random;
+
+[Verb("rand", HelpText = "随机数生成器")]
+public class Option : IOption
+{
+    [Flags]
+    public enum GenerateTypes
+    {
+        Number           = 1
+      , LowerCaseLetter  = 2
+      , UpperCaseLetter  = 4
+      , SpecialCharacter = 8
+    }
+
+    [Value(1, MetaName = "长度", Required = true, HelpText = "随机数字长度")]
+    public int Length { get; set; }
+
+
+    [Value(0, MetaName = "生成类型", Required = true, HelpText = "BitSet 1：[0-9]，2：[a-z]，4：[A-Z]，8：[ascii.0x21-0x2F]")]
+    public GenerateTypes Type { get; set; }
+}
\ No newline at end of file
diff --git a/src/RemoveTrailingWhiteSpace/Main.cs b/src/RemoveTrailingWhiteSpace/Main.cs
new file mode 100644
index 0000000..3667008
--- /dev/null
+++ b/src/RemoveTrailingWhiteSpace/Main.cs
@@ -0,0 +1,103 @@
+using System.Diagnostics.CodeAnalysis;
+using NSExt.Extensions;
+
+namespace Dot.RemoveTrailingWhiteSpace;
+
+public sealed class Main : Tool<Option>, IDisposable
+{
+    private                 int              _breakCnt;
+    private                 bool             _disposed;
+    private static readonly object           _lockObj = new();
+    private                 int              _procedCnt;
+    private                 int              _replaceCnt;
+    private                 ChildProgressBar _step2Bar;
+    private                 int              _totalCnt;
+    public Main(Option opt) : base(opt) { }
+
+
+    ~Main()
+    {
+        Dispose(false);
+    }
+
+    private void Dispose(bool disposing)
+    {
+        if (_disposed) return;
+        if (disposing) _step2Bar?.Dispose();
+        _disposed = true;
+    }
+
+    private void FileHandle(string file)
+    {
+        _step2Bar.Tick();
+        ShowMessage(1, 0, 0);
+        var spacesCnt = 0;
+
+        using var fsr = OpenFileToWrite(file);
+        if (fsr.Length == 0 || (spacesCnt = GetSpacesCnt(fsr)) == 0) {
+            ShowMessage(0, 0, 1);
+            return;
+        }
+
+        fsr.Seek(0, SeekOrigin.Begin);
+        if (!fsr.IsTextStream()) return;
+        ShowMessage(0, 1, 0);
+        fsr.SetLength(fsr.Length - spacesCnt);
+    }
+
+    private static int GetSpacesCnt(Stream fsr)
+    {
+        var trimLen = 0;
+        fsr.Seek(-1, SeekOrigin.End);
+        int data;
+        while ((data = fsr.ReadByte()) != -1)
+            if (new[] { 0x20, 0x0d, 0x0a }.Contains(data)) {
+                ++trimLen;
+                if (fsr.Position - 2 < 0) break;
+                fsr.Seek(-2, SeekOrigin.Current);
+            }
+            else {
+                break;
+            }
+
+        return trimLen;
+    }
+
+
+    private void ShowMessage(int procedCnt, int removeCnt, int breakCnt)
+    {
+        lock (_lockObj) {
+            _procedCnt        += procedCnt;
+            _replaceCnt       += removeCnt;
+            _breakCnt         += breakCnt;
+            _step2Bar.Message =  $"已处理：{_procedCnt}/{_totalCnt}，替换：{_replaceCnt}，跳过：{_breakCnt}";
+        }
+    }
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    /// <inheritdoc />
+    [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
+    public override void Run()
+    {
+        if (!Directory.Exists(Opt.Path)) throw new ArgumentException(nameof(Opt.Path), $"指定的路径“{Opt.Path}”不存在");
+
+
+        using var step1Bar = new IndeterminateProgressBar("查找文件...", DefaultProgressBarOptions);
+
+
+        var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
+        _totalCnt = fileList.Count();
+
+        step1Bar.Message = "查找文件...OK";
+        step1Bar.Finished();
+
+        _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
+
+        Parallel.ForEach(fileList, FileHandle);
+    }
+}
\ No newline at end of file
diff --git a/src/RemoveTrailingWhiteSpace/Option.cs b/src/RemoveTrailingWhiteSpace/Option.cs
new file mode 100644
index 0000000..3cf42c8
--- /dev/null
+++ b/src/RemoveTrailingWhiteSpace/Option.cs
@@ -0,0 +1,11 @@
+namespace Dot.RemoveTrailingWhiteSpace;
+
+[Verb("remove-whitespace", HelpText = "移除文件尾部换行和空格")]
+public class Option : IOption
+{
+    [Option('f', "filter", Required = false, HelpText = "文件通配符", Default = "*.*")]
+    public string Filter { get; set; } //normal options here
+
+    [Option('p', "path", Required = false, HelpText = "要处理的目录路径", Default = ".")]
+    public string Path { get; set; }
+}
\ No newline at end of file
diff --git a/src/Text/Main.cs b/src/Text/Main.cs
index f7f6794..f083935 100644
--- a/src/Text/Main.cs
+++ b/src/Text/Main.cs
@@ -102,9 +102,7 @@ html-decode:       {o.HtmlDecode}
         PrintOutput(utf8);
         PrintOutput(unicodeLittleEndian);
         PrintOutput(unicodeBigEndian);
-
         Console.Write(Strings.PressAnyKey);
-
         Console.ReadKey();
     }
 }
\ No newline at end of file
diff --git a/src/Tool.cs b/src/Tool.cs
index 3671fc2..1f06c3e 100644
--- a/src/Tool.cs
+++ b/src/Tool.cs
@@ -61,7 +61,6 @@ public abstract class Tool<TOption> : ITool
             }
         }
         catch (IOException) { }
-
         return fsr;
     }
 
diff --git a/src/TrimUtf8Bom/Main.cs b/src/TrimUtf8Bom/Main.cs
new file mode 100644
index 0000000..93dc51f
--- /dev/null
+++ b/src/TrimUtf8Bom/Main.cs
@@ -0,0 +1,90 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace Dot.TrimUtf8Bom;
+
+public sealed class Main : Tool<Option>, IDisposable
+{
+    private                 int              _breakCnt;
+    private                 bool             _disposed;
+    private static readonly object           _lockObj = new();
+    private                 int              _procedCnt;
+    private                 ChildProgressBar _step2Bar;
+    private                 int              _totalCnt;
+    private                 int              _trimCnt;
+    public Main(Option opt) : base(opt) { }
+
+
+    ~Main()
+    {
+        Dispose(false);
+    }
+
+    private void Dispose(bool disposing)
+    {
+        if (_disposed) return;
+        if (disposing) _step2Bar?.Dispose();
+        _disposed = true;
+    }
+
+
+    private void ShowMessage(int procedCnt, int replaceCnt, int breakCnt)
+    {
+        lock (_lockObj) {
+            _procedCnt        += procedCnt;
+            _trimCnt          += replaceCnt;
+            _breakCnt         += breakCnt;
+            _step2Bar.Message =  $"已处理：{_procedCnt}/{_totalCnt}，移除BOM：{_trimCnt}，跳过：{_breakCnt}";
+        }
+    }
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    [SuppressMessage("ReSharper", "PossibleMultipleEnumeration")]
+    public override void Run()
+    {
+        if (!Directory.Exists(Opt.Path)) throw new ArgumentException(nameof(Opt.Path), $"指定的路径“{Opt.Path}”不存在");
+
+
+        var       utf8Bom  = new byte[] { 0xef, 0xbb, 0xbf };
+        using var step1Bar = new IndeterminateProgressBar("查找文件...", DefaultProgressBarOptions);
+
+
+        var fileList = EnumerateFiles(Opt.Path, Opt.Filter);
+        _totalCnt = fileList.Count();
+
+        step1Bar.Message = "查找文件...OK";
+        step1Bar.Finished();
+
+        _step2Bar = step1Bar.Spawn(_totalCnt, string.Empty, DefaultProgressBarOptions);
+
+        Parallel.ForEach(fileList, file => {
+            _step2Bar.Tick();
+            ShowMessage(1, 0, 0);
+
+            var tmpFile    = $"{file}.tmp";
+            var isReplaced = false;
+            using (var fsr = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
+                Span<byte> buffer  = stackalloc byte[utf8Bom.Length];
+                var        readLen = fsr.Read(buffer);
+                if (readLen == utf8Bom.Length && buffer.SequenceEqual(utf8Bom)) {
+                    using var fsw = new FileStream(tmpFile, FileMode.OpenOrCreate, FileAccess.Write);
+                    int       data;
+                    while ((data = fsr.ReadByte()) != -1) fsw.WriteByte((byte)data);
+                    isReplaced = true;
+                }
+            }
+
+            if (isReplaced) {
+                MoveFile(tmpFile, file);
+                ShowMessage(0, 1, 0);
+            }
+            else {
+                ShowMessage(0, 0, 1);
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/src/TrimUtf8Bom/Option.cs b/src/TrimUtf8Bom/Option.cs
new file mode 100644
index 0000000..390aa98
--- /dev/null
+++ b/src/TrimUtf8Bom/Option.cs
@@ -0,0 +1,11 @@
+namespace Dot.TrimUtf8Bom;
+
+[Verb("trim-utf8-bom", HelpText = "移除文件的uf8 bom")]
+public class Option : IOption
+{
+    [Option('f', "filter", Required = false, HelpText = "文件通配符", Default = "*.*")]
+    public string Filter { get; set; } //normal options here
+
+    [Option('p', "path", Required = false, HelpText = "要处理的目录路径", Default = ".")]
+    public string Path { get; set; }
+}
\ No newline at end of file