Remove cat builtin

src/main.rs

@@ -4,11 +4,6 @@ use std::{
 
 use clap::Parser;
 
-#[derive(Parser, Debug)]
-struct Cat {
-    path: PathBuf,
-}
-
 #[derive(Parser, Debug)]
 struct Cd {
     path: PathBuf,
@@ -42,28 +37,6 @@ fn main() {
         };
         match cmd[0].as_str() {
             "pwd" => println!("{}", current_dir().unwrap().to_string_lossy()),
-            "cat" => {
-                let cmd = match Cat::try_parse_from(&cmd) {
-                    Ok(cmd) => cmd,
-                    Err(err) => {
-                        err.print().unwrap();
-                        continue;
-                    }
-                };
-                let contents = match std::fs::read(&cmd.path) {
-                    Ok(val) => val,
-                    Err(e) => {
-                        println!("cat: {}: {}", cmd.path.display(), e);
-                        continue;
-                    }
-                };
-                io::stdout().lock().write_all(&contents).unwrap();
-                if let Some(&last_byte) = contents.last() {
-                    if last_byte != b'\n' {
-                        println!("%");
-                    }
-                }
-            }
             "cd" => {
                 let cmd = match Cd::try_parse_from(&cmd) {
                     Ok(cmd) => cmd,
@@ -86,7 +59,6 @@ fn main() {
             "help" => {
                 println!("Commands:");
                 println!("pwd");
-                println!("cat");
                 println!("cd");
                 println!("exit");
                 println!("help");