diff --git a/main.zig b/main.zig
new file mode 100644
index 0000000..43946a7
--- /dev/null
+++ b/main.zig
@@ -0,0 +1,45 @@
+// using zig-0.15.2
+const std = @import("std");
+
+const File = struct {
+    path: [:0]u8,
+    size: u64,
+    duplicate_size: ?usize = null,
+    hash: ?u256 = null,
+};
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const allocator = gpa.allocator();
+    defer _ = gpa.deinit();
+
+    var list: std.ArrayList(File) = .empty;
+    defer list.deinit(allocator);
+    var args_it = std.process.args();
+    _ = args_it.next(); // skip program name
+    while (args_it.next()) |arg| {
+        const dir = try std.fs.cwd().openDir(arg, .{ .iterate = true });
+        var walker = try dir.walk(allocator);
+        defer walker.deinit();
+        while (try walker.next()) |entry| {
+            if (entry.kind == .file) {
+                const stat = try entry.dir.statFile(entry.basename);
+                try list.append(allocator, .{
+                    .path = try allocator.dupeZ(u8, entry.path),
+                    .size = stat.size,
+                });
+            }
+        }
+    }
+
+    for (list.items, 0..) |*item, idx| {
+        for (list.items) |*item2| {
+            if (item.size == item2.size) {
+                item.duplicate_size = idx;
+                item2.duplicate_size = idx;
+            }
+        }
+        std.debug.print("path: {s}, size {}\n", .{ item.path, item.size });
+        allocator.free(item.path);
+    }
+}