a very basic shell

src/main.rs

@@ -0,0 +1,56 @@
+use std::io::{self, Write};
+use std::process::Command;
+
+fn display_prompt() {
+    print!("> ");
+    io::stdout().flush().expect("unable to flush buffer");
+}
+
+fn get_input() -> String {
+    let mut input = String::new();
+    io::stdin()
+        .read_line(&mut input)
+        .expect("failed to readline");
+    input.pop();
+    return input;
+}
+
+fn parse_input(s: &str) -> Vec<&str> {
+    return s.split_whitespace().collect();
+}
+
+fn get_command(v: Vec<&str>) -> String {
+    return v[0..1].concat();
+}
+
+fn get_args(v: Vec<&str>) -> Vec<&str> {
+    return v[1..].to_vec();
+}
+
+fn run_command(cmd: String, args: Vec<&str>) {
+    Command::new(cmd)
+        .args(args)
+        .spawn()
+        .expect("failed to execute process");
+}
+
+fn main() {
+    loop {
+        // Display the prompt for the user and wait for input.
+        display_prompt();
+
+        // Get the users input and store it as &str
+        let input = get_input();
+        let input = input.as_str();
+
+        // Parse the users input and create tokens.
+        let tokens = parse_input(input);
+
+        // Convert our tokens to our command and arguments.
+        let cmd = get_command(tokens.clone());
+        let args = get_args(tokens.clone());
+
+        // Run the command and arguments.
+        run_command(cmd, args);
+    }
+}