Basic shell

src/kernel/shell.c

@@ -0,0 +1,13 @@
+#include "shell.h"
+#include "lib/stdio.h"
+#include "lib/string.h"
+
+int shell_run(char *cmd){
+    if(!strcmp(cmd, "HELLO")){
+        printf("Hello!\n");
+    }
+    else{
+        printf("SHELL: Unknown command \"%s\"\n", cmd);
+        return 127;
+    }
+}

src/kernel/shell.h

@@ -0,0 +1,3 @@
+#pragma once
+
+int shell_run();