diff --git a/README.md b/README.md
index debb838..2105079 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,8 @@ Simple Rust Tests
 Project or files:
 ```
 .
+├── __concurrent
+│   └── arc-swap
 ├── __crypto
 │   ├── btc-address
 │   ├── crypto
@@ -12,6 +14,7 @@ Project or files:
 │   ├── pwhash
 │   ├── random
 │   ├── ring
+│   ├── rsa
 │   ├── secp256k1
 │   └── totp
 ├── __database
@@ -20,6 +23,8 @@ Project or files:
 ├── __diff
 │   ├── diffy
 │   └── prettydiff
+├── __enclave
+│   └── virt_enclave
 ├── __err
 │   ├── err_derive
 │   └── quick_error
@@ -28,6 +33,8 @@ Project or files:
 │   ├── cpp
 │   ├── jni
 │   └── live-reload-rust
+├── __fs
+│   └── fuse
 ├── __image
 │   └── svg
 ├── __lang
@@ -36,6 +43,7 @@ Project or files:
 │   ├── quickjs
 │   └── sana
 ├── __linux
+│   ├── notify
 │   ├── psutil
 │   └── sysinfo
 ├── __misc
@@ -45,6 +53,8 @@ Project or files:
 │   ├── smartstring
 │   └── walkdir
 ├── __network
+│   ├── ip
+│   ├── nfqueue
 │   ├── tcp
 │   └── udp_laminar
 ├── __search
@@ -56,6 +66,8 @@ Project or files:
 │   ├── encoding
 │   ├── flatbuffers
 │   └── serde_json
+├── __shell
+│   └── xshell
 ├── __std
 │   ├── async_await
 │   ├── into
@@ -64,6 +76,7 @@ Project or files:
 │   └── thread
 ├── __term
 │   ├── colored_msg
+│   ├── confy_table
 │   ├── indicatif
 │   └── term
 ├── __time
@@ -107,7 +120,7 @@ Project or files:
     ├── vec.rs
     └── while.rs
 
-79 directories, 26 files
+92 directories, 26 files
 
 ```
 
diff --git a/__shell/xshell/Cargo.lock b/__shell/xshell/Cargo.lock
new file mode 100644
index 0000000..7d7e541
--- /dev/null
+++ b/__shell/xshell/Cargo.lock
@@ -0,0 +1,23 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "xshell"
+version = "0.1.0"
+dependencies = [
+ "xshell 0.1.6",
+]
+
+[[package]]
+name = "xshell"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e9bbfccbb2233e6b0473b7870d4b0811a402e9e249a5e8394e768e5a5c9c37d"
+dependencies = [
+ "xshell-macros",
+]
+
+[[package]]
+name = "xshell-macros"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b94f1c632d730a1704b21dc551a4c74fbed713cfa59593708f94943548206134"
diff --git a/__shell/xshell/Cargo.toml b/__shell/xshell/Cargo.toml
new file mode 100644
index 0000000..8f33213
--- /dev/null
+++ b/__shell/xshell/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "xshell"
+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]
+xshell = "0.1"
+
+
diff --git a/__shell/xshell/src/main.rs b/__shell/xshell/src/main.rs
new file mode 100644
index 0000000..0f9d175
--- /dev/null
+++ b/__shell/xshell/src/main.rs
@@ -0,0 +1,11 @@
+use xshell::{cmd, read_file};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let name = "World";
+    let output = cmd!("echo Hello {name}!").read()?;
+    println!("{}", output);
+
+    let err = read_file("feeling-lucky.txt").unwrap_err();
+    println!("cannot read file: {}", err);
+    Ok(())
+}