diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..1d1a199
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,121 @@
+extern crate clap;
+extern crate config;
+extern crate db;
+extern crate dirs;
+extern crate front;
+use clap::{App, Arg, SubCommand};
+use db::docker::ImageDrive;
+
+fn main() {
+    let matches = App::new("ImageDrive")
+        .version("0.1")
+        .author("rcmerci@gmail.com")
+        .arg(
+            Arg::with_name("config")
+                .short("c")
+                .long("config")
+                .value_name("FILE")
+                .help("Sets a custom config file")
+                .takes_value(true),
+        )
+        .arg(
+            Arg::with_name("output")
+                .help("Sets an optional output file")
+                .index(1),
+        )
+        .subcommand(
+            SubCommand::with_name("ls")
+                .about("list entries or items")
+                .arg(
+                    Arg::with_name("entry")
+                        .help("set it if list items")
+                        .index(1),
+                ),
+        )
+        .subcommand(
+            SubCommand::with_name("put")
+                .about("put host file to imagedrive")
+                .arg(Arg::with_name("entry").help("entry name").required(true))
+                .arg(Arg::with_name("file").help("file path").required(true)),
+        )
+        .subcommand(
+            SubCommand::with_name("export")
+                .about("export entry to host")
+                .arg(Arg::with_name("entry").help("entry name").required(true))
+                .arg(Arg::with_name("dir").help("dst dir path").required(true)),
+        )
+        .subcommand(
+            SubCommand::with_name("sync")
+                .about("sync localDB with remoteDB")
+                .arg(
+                    Arg::with_name("from_remote")
+                        .help("sync remoteDB to localDB")
+                        .short("r")
+                        .long("remote"),
+                ),
+        )
+        .get_matches();
+
+    let mut config_path = None;
+    if matches.is_present("config") {
+        config_path = Some(std::path::Path::new(matches.value_of("config").unwrap()).to_path_buf());
+    } else {
+        let home = dirs::home_dir().unwrap();
+        config_path = Some(std::path::Path::new(&home).join(".imagedrive"));
+    }
+    let config_path = config_path.map(|p| {
+        if !p.exists() {
+            let errstr = format!("config file: '{:?}' not exists", p.display());
+            panic!(errstr);
+        }
+        p
+    });
+
+    let cfg = config::get_config(config_path.unwrap());
+
+    let username = &cfg.username;
+    let server = &cfg.server;
+    let password = &cfg.password;
+    let image_name = &cfg.image_name;
+
+    if let Some(matches) = matches.subcommand_matches("ls") {
+        // "$ myapp test" was run
+        if matches.is_present("entry") {
+            front::list_entry_item(
+                &ImageDrive::new(image_name, server, username, password),
+                matches.value_of("entry").unwrap(),
+            );
+        } else {
+            front::list_entry(&ImageDrive::new(image_name, server, username, password));
+        }
+    }
+
+    if let Some(matches) = matches.subcommand_matches("put") {
+        let entry = matches.value_of("entry").unwrap();
+        let filepath = matches.value_of("file").unwrap();
+        front::put(
+            &ImageDrive::new(image_name, server, username, password),
+            entry,
+            filepath,
+        );
+    }
+
+    if let Some(matches) = matches.subcommand_matches("export") {
+        let entry = matches.value_of("entry").unwrap();
+        let filepath = matches.value_of("dir").unwrap();
+        front::export(
+            &ImageDrive::new(image_name, server, username, password),
+            entry,
+            filepath,
+        );
+    }
+
+    if let Some(matches) = matches.subcommand_matches("sync") {
+        front::sync(
+            &ImageDrive::new(image_name, server, username, password),
+            matches.is_present("from_remote"),
+        );
+    }
+
+    // Continued program logic goes here...
+}