diff --git a/Cargo.toml b/Cargo.toml
index 2da1c4e..1e16028 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "smurf"
-version = "0.1.1"
+version = "0.2.0"
 edition = "2021"
 authors = ["Ivan Bushchik <ivabus@ivabus.dev>"]
 description = "SMall Useful Rust Functions"
diff --git a/README.md b/README.md
index d735809..81c2dc2 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,51 @@
 
 > SMall Useful Rust Functions
 
-## Components
+## Components 
+
+### IO
+
+- macros input!(T) and input_vec!(T), that could be used to simplify stdin process
+- read_file_to_str() basically reads file to string (yes.)
 
 ### Shell
 
-- macro `shell!`
+- macros shell!() 
+## Usage
 
-### File
+Add this to your `Cargo.toml`:
 
-- function `read_to_str`
\ No newline at end of file
+```toml
+[dependencies]
+smurf = "0.2"
+```
+
+and this to your crate root:
+
+```rust
+extern crate smurf;
+```
+
+## Example
+
+```rust
+use smurf;
+use std::io::Write;
+
+fn main() {
+	print!("What is your name? ");
+	std::io::stdout().flush().unwrap();
+	let user_name = input!(String);
+	print!("What is your age? ");
+	std::io::stdout().flush().unwrap();
+	let user_age = input!(u8);
+	let shell_output = shell!("echo Hello {} of age {}", user_name, user_age); // Returns ShellResult {code: i32, stdout: String, stderr: String}
+	println!("Shell output: {}", shell_output.stdout);
+	println!("Shell stderr: {}", shell_output.stderr);
+	println!("Shell exit code: {}", shell_output.code);
+}
+```
+
+## License
+
+[MIT](LICENSE-MIT)
diff --git a/src/file.rs b/src/file.rs
deleted file mode 100644
index 1b6d47f..0000000
--- a/src/file.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-use std::fs::File;
-use std::io::{prelude::*, BufReader};
-
-pub fn read_to_str(path: &std::path::PathBuf) -> String {
-	let file = File::open(&path);
-	let file = match file {
-		Ok(data) => data,
-		Err(_) => {
-			eprintln!("Cannot open file \"{}\"", path.display());
-			std::process::exit(2)
-		}
-	};
-	let mut buf_reader = BufReader::new(file);
-	let mut content = String::new();
-	buf_reader.read_to_string(&mut content).unwrap();
-	content
-}
diff --git a/src/io.rs b/src/io.rs
new file mode 100644
index 0000000..01a2c4e
--- /dev/null
+++ b/src/io.rs
@@ -0,0 +1,40 @@
+use std::fs::File;
+use std::io::{prelude::*, BufReader};
+
+pub fn read_file_to_str(path: &std::path::PathBuf) -> Option<String> {
+	let file = File::open(&path);
+	let file = match file {
+		Ok(data) => data,
+		Err(_) => {
+			eprintln!("Cannot open file \"{}\"", path.display());
+			return None
+		}
+	};
+	let mut buf_reader = BufReader::new(file);
+	let mut content = String::new();
+	buf_reader.read_to_string(&mut content).unwrap();
+	Some(content)
+}
+
+
+#[macro_export]
+macro_rules! input {
+	($t:ty) => {
+		{
+			let mut input = String::new();
+			std::io::stdin().read_line(&mut input).unwrap();
+			input.trim().parse::<$t>().unwrap()
+		}
+	}
+}
+
+#[macro_export]
+macro_rules! input_vec {
+	($t:ty) => {
+		{
+			let mut input = String::new();
+			std::io::stdin().read_line(&mut input).unwrap();
+			input.trim().split_whitespace().map(|x| x.parse::<$t>().unwrap()).collect::<Vec<$t>>()
+		}
+	}
+}
diff --git a/src/lib.rs b/src/lib.rs
index 902f3dd..d734cd4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,2 @@
-pub mod file;
+pub mod io;
 pub mod shell;
diff --git a/src/shell.rs b/src/shell.rs
index eec40ad..5b6c647 100644
--- a/src/shell.rs
+++ b/src/shell.rs
@@ -12,8 +12,7 @@ pub struct ShellResult {
 	pub stdout: String,
 	pub stderr: String,
 }
-
-#[allow(dead_code)]
+ 
 pub fn run(command: String) -> ShellResult {
 	let mut iter = command.split_whitespace();
 	let mut current = iter.next();
@@ -24,6 +23,7 @@ pub fn run(command: String) -> ShellResult {
 	}
 	let command = Command::new(&words[0])
 		.args(&words[1..])
+		.env("PATH", "/bin:/usr/bin") // TODO: Make this configurable
 		.output()
 		.expect(&format!("Failed to execute '{}'", command));
 	return ShellResult {
@@ -32,3 +32,44 @@ pub fn run(command: String) -> ShellResult {
 		stderr: String::from_utf8(command.stderr).unwrap(),
 	};
 }
+
+#[cfg(test)]
+mod tests {
+	#[test]
+	fn test_shell_macro() {
+		let result = shell!("echo hello");
+		assert_eq!(result.code, 0);
+		assert_eq!(result.stdout, "hello\n");
+		assert_eq!(result.stderr, "");
+	}
+
+	/* You literally can't use pipe using std::process::Command */
+	// TODO: figure out how to test this
+	#[ignore]
+	#[test]
+	fn test_shell_macro_with_stderr() {
+		let result = shell!("echo hello 1>&2");
+		assert_eq!(result.code, 0);
+		assert_eq!(result.stdout, "");
+		assert_eq!(result.stderr, "hello\n");
+	}
+
+	#[test]
+	fn test_shell_macro_with_args() {
+		let result = shell!("echo {} {}", "hello", "world");
+		assert_eq!(result.code, 0);
+		assert_eq!(result.stdout, "hello world\n");
+		assert_eq!(result.stderr, "");
+	}
+
+	// TODO: figure out how to test this
+	#[ignore]
+	#[test]
+	fn test_shell_macro_with_code() {
+		let result = shell!("sh -c exit 1");
+		assert_eq!(result.code, 1);
+		assert_eq!(result.stdout, "");
+		assert_eq!(result.stderr, "");
+	}
+
+}
\ No newline at end of file