diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..5b7bb3d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "finding"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+[dependencies]
+argparse = "0.2.2"
+rust_util = { git = "https://github.com/jht5945/rust_util" }
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..e65d3c7
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,35 @@
+extern crate argparse;
+extern crate rust_util;
+
+use argparse::{ArgumentParser, StoreTrue, Store};
+use rust_util::*;
+
+const VERSION: &str = "0.1";
+
+fn print_version() {
+    print!(r#"finding {}
+Copyright (C) 2019 Hatter Jiang.
+License MIT <https://opensource.org/licenses/MIT>
+
+Written by Hatter Jiang
+"#, VERSION);
+}
+
+fn main() {
+    let mut version = false;
+    let mut huge_file_size = String::from("100M");
+    {
+        let mut ap = ArgumentParser::new();
+        ap.set_description("finding - command line find tool.");
+        ap.refer(&mut huge_file_size).add_option(&["--huge-file"], Store, "Huge file size, default 100M");
+        ap.refer(&mut version).add_option(&["-v", "--version"], StoreTrue, "Print version");
+        ap.parse_args_or_exit();
+    }
+    
+    if version {
+        print_version();
+        return;
+    }
+
+    println!("Hello, world!");
+}