feat: add the pwd command

coreutils/src/commands/mod.rs

@@ -15,3 +15,4 @@ command!(r#true::True);
 command!(r#false::False);
 command!(test::Test);
 command!(yes::Yes);
+command!(pwd::Pwd);

coreutils/src/commands/pwd.rs

@@ -0,0 +1,18 @@
+use boxutils::args::ArgParser;
+use boxutils::commands::Command;
+
+pub struct Pwd;
+
+impl Command for Pwd {
+    fn execute(&self) {
+        let args = ArgParser::builder().add_flag("--help").parse_args("yes");
+
+        if args.get_flag("--help") {
+            println!("Usage: pwd");
+            return;
+        }
+
+        let pwd = std::env::current_dir().unwrap();
+        println!("{}", pwd.display());
+    }
+}

src/registry.rs

@@ -19,6 +19,7 @@ pub fn get_registry() -> CommandRegistry {
     );
     registry.register("[", Box::new(coreutils::commands::Test::with_bracket()));
     registry.register("yes", Box::new(coreutils::commands::Yes));
+    registry.register("pwd", Box::new(coreutils::commands::Pwd));
     registry.register("box", Box::new(Boxcmd));
 
     registry