diff --git a/cat.zig b/cat.zig
index 00fce73..98d81c0 100644
--- a/cat.zig
+++ b/cat.zig
@@ -13,8 +13,12 @@ fn help() !void {
     try stdout.print("使用法: cat [オプション]... [ファイル]...\n", .{});
     try stdout.print("ファイル (複数可) の内容を結合して標準出力に出力します。\n\n", .{});
     try stdout.print("ファイルの指定がない場合や FILE が - の場合, 標準入力から読み込みを行います。\n\n", .{});
+    try stdout.print("-b カッコの行列以外、全ての行に行番号を付ける\n", .{});
     //try stdout.print("-c 色\n", .{});
+    try stdout.print("-m 全部は１行列に表示する\n", .{});
     try stdout.print("-n 全ての行に行番号を付ける\n", .{});
+    try stdout.print("-s カッコの行列を見逃す\n", .{});
+    try stdout.print("-u 不使用\n", .{});
     try stdout.print("-h ヘルプを表示\n", .{});
     try stdout.print("-v バージョンを表示\n", .{});
 
@@ -58,8 +62,12 @@ pub fn main() !void {
         }
     }
 
+    var isnun: bool = false;
     var iscol: bool = false;
+    var isone: bool = false;
     var isnum: bool = false;
+    var issqz: bool = false;
+    var line_number: usize = 0;
 
     for (option.items) |i| {
         if (i == 'h') {
@@ -70,12 +78,21 @@ pub fn main() !void {
             try ver();
             return;
         }
+        if (i == 'b') {
+            isnun = true;
+        }
         if (i == 'c') {
             iscol = true;
         }
+        if (i == 'd') {
+            isone = true;
+        }
         if (i == 'n') {
             isnum = true;
         }
+        if (i == 's') {
+            issqz = true;
+        }
     }
 
     if (fname.items.len == 0) {
@@ -89,9 +106,24 @@ pub fn main() !void {
 
         var buf: [1024]u8 = undefined;
         while (true) {
-            const br = try file.read(buf[0..]);
-            if (br == 0) break;
-            try io.getStdOut().writer().writeAll(buf[0..br]);
+            const result = try file.reader().readUntilDelimiterOrEof(buf[0..], '\n') orelse break;
+            if (issqz and std.mem.trimRight(u8, result, "\n\r").len == 0) continue;
+            const stripped = std.mem.trim(u8, result, " \n\t\r");
+
+            if (isone) {
+                try io.getStdOut().writer().writeAll(stripped);
+            } else {
+                if (isnum or (isnun and stripped.len != 0)) {
+                    line_number += 1;
+                    try io.getStdOut().writer().print("  {:3} | ", .{line_number});
+                } else if (isnum) {
+                    line_number += 1;
+                    try io.getStdOut().writer().print("  {:3} | ", .{line_number});
+                }
+
+                try io.getStdOut().writer().writeAll(result);
+                try io.getStdOut().writer().print("\n", .{});
+            }
         }
     }
 }