diff --git a/README.md b/README.md
index bfc90df..d59658c 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ Project or files:
 │   ├── flatbuffers
 │   └── serde_json
 ├── __shell
+│   ├── ssh2
 │   └── xshell
 ├── __std
 │   ├── async_await
@@ -137,7 +138,7 @@ Project or files:
     ├── vec.rs
     └── while.rs
 
-109 directories, 26 files
+110 directories, 26 files
 
 ```
 
diff --git a/__shell/ssh2/Cargo.lock b/__shell/ssh2/Cargo.lock
new file mode 100644
index 0000000..bdf7eaf
--- /dev/null
+++ b/__shell/ssh2/Cargo.lock
@@ -0,0 +1,183 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
+name = "bitflags"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+
+[[package]]
+name = "cc"
+version = "1.0.65"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95752358c8f7552394baf48cd82695b345628ad3f170d607de3ca03b8dacca15"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.80"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
+
+[[package]]
+name = "libssh2-sys"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca46220853ba1c512fc82826d0834d87b06bcd3c2a42241b7de72f3d2fe17056"
+dependencies = [
+ "cc",
+ "libc",
+ "libz-sys",
+ "openssl-sys",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "libz-sys"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "602113192b08db8f38796c4e85c39e960c145965140e918018bcde1952429655"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "lock_api"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4da24a77a3d8a6d4862d95f72e6fdb9c09a643ecdb402d754004a557f2bec75"
+dependencies = [
+ "scopeguard",
+]
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a842db4709b604f0fe5d1170ae3565899be2ad3d9cbc72dedc789ac0511f78de"
+dependencies = [
+ "autocfg",
+ "cc",
+ "libc",
+ "pkg-config",
+ "vcpkg",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3a704eb390aafdc107b0e392f56a82b668e3a71366993b5340f5833fd62505e"
+dependencies = [
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d58c7c768d4ba344e3e8d72518ac13e259d7c7ade24167003b8488e10b6740a3"
+dependencies = [
+ "cfg-if",
+ "cloudabi",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "winapi",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+
+[[package]]
+name = "redox_syscall"
+version = "0.1.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
+
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "smallvec"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7acad6f34eb9e8a259d3283d1e8c1d34d7415943d4895f65cc73813c7396fc85"
+
+[[package]]
+name = "ssh2"
+version = "0.1.0"
+dependencies = [
+ "ssh2 0.8.3",
+]
+
+[[package]]
+name = "ssh2"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c516996bbb84de5dba6e118406c1e1429111cfb4d844e20e1290e5b6ebe6ad5"
+dependencies = [
+ "bitflags",
+ "libc",
+ "libssh2-sys",
+ "parking_lot",
+]
+
+[[package]]
+name = "vcpkg"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6454029bf181f092ad1b853286f23e2c507d8e8194d01d92da4a55c274a5508c"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/__shell/ssh2/Cargo.toml b/__shell/ssh2/Cargo.toml
new file mode 100644
index 0000000..76f8b72
--- /dev/null
+++ b/__shell/ssh2/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "ssh2"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+ssh2 = "0.8.3"
+
diff --git a/__shell/ssh2/src/main.rs b/__shell/ssh2/src/main.rs
new file mode 100644
index 0000000..99d35a8
--- /dev/null
+++ b/__shell/ssh2/src/main.rs
@@ -0,0 +1,49 @@
+use ssh2::Session;
+use std::io::prelude::*;
+use std::net::TcpStream;
+
+// // Connect to the local SSH server
+// let tcp = TcpStream::connect("127.0.0.1:22").unwrap();
+// let mut sess = Session::new().unwrap();
+// sess.set_tcp_stream(tcp);
+// sess.handshake().unwrap();
+// sess.userauth_password("username", "password").unwrap();
+// assert!(sess.authenticated());
+
+// https://docs.rs/ssh2/0.8.3/ssh2/
+fn main() {
+    // Almost all APIs require a `Session` to be available
+    let sess = Session::new().unwrap();
+    let mut agent = sess.agent().unwrap();
+
+    // Connect the agent and request a list of identities
+    agent.connect().unwrap();
+    agent.list_identities().unwrap();
+
+    for identity in agent.identities().unwrap() {
+        let pubkey = identity.blob();
+        println!("{}", identity.comment());
+        println!("- {:?}", pubkey);
+    }
+
+    // Connect to the SSH server
+    let tcp = TcpStream::connect("hatter.ink:22").unwrap();
+    let mut sess = Session::new().unwrap();
+    sess.set_tcp_stream(tcp);
+    sess.handshake().unwrap();
+
+    // Try to authenticate with the first identity in the agent.
+    sess.userauth_agent("root").unwrap();
+
+    // Make sure we succeeded
+    println!("authenticated: {}", sess.authenticated());
+
+    // Run command
+    let mut channel = sess.channel_session().unwrap();
+    channel.exec("ls -l --color").unwrap();
+    let mut s = String::new();
+    channel.read_to_string(&mut s).unwrap();
+    println!("{}", s);
+    channel.wait_close().unwrap();
+    println!("{}", channel.exit_status().unwrap());
+}
\ No newline at end of file