Added main.rs

hw6/task2/src/command.rs

     Cd(Option<OsString>),
 }
 
-impl Command {
-}
+impl Command {}
 
 impl FromStr for Command {
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-    }
+    fn from_str(s: &str) -> Result<Self, Self::Err> {}
 }

hw6/task2/src/main.rs

+use std::process;
+mod shell;
+
+fn main() {
+    let mut s = Shell::new(..);
+    match s.start() {
+        Ok(_) => process::exit(0),
+        Err(_) => process::exit(1),
+    }
+}

hw6/task2/src/shell.rs

 use std::io;
 use std::io::prelude::*;
+use command;
 
 struct Shell<R, W> {
     pub reader: R,
     }
     /// Initializes the Shell Loop
     pub fn start() -> Result<Self, &str> {
+        shell_loop();
     }
     /// Waits for user inputs.
     fn shell_loop() -> Result {
+        loop {
+        }
     }
     /// Prints the shell prompt.
     fn prompt() -> Result<Option, &str> {
 
 impl BufRead for Shell<R, W> {
     fn fill_buf(&mut self) -> Result<&[u8]> {
-        let buf = match stdin.fill_buf() {
-            Ok(res) => res,
-            Err(e) => return Err(e),
-        }
-        buf.unwrap()
+        stdin.fill_buf()
     }
     fn consume(&mut self, amt: usize) {
     }
     fn flush(&mut self) -> Result<()> {
     }
 }
-
-
-let mut s = Shell::new();
-    match s.start() {
-        Ok(_) => process::exit(0),
-        Err(_) => process::exit(1),
-    }