// Search for any object of Type GUITexture, 
// if found print its name, else print a message
// that says that it was not found.

function Start() { 
    var s : GUITexture = FindObjectOfType(GUITexture);
    if(s)
        Debug.Log("GUITexture object found: " + s.name);
    else
        Debug.Log("No GUITexture object could be found");
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Start() {
        GUITexture s = FindObjectOfType(typeof(GUITexture));
        if (s)
            Debug.Log("GUITexture object found: " + s.name);
        else
            Debug.Log("No GUITexture object could be found");
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Start():
        s as GUITexture = FindObjectOfType(GUITexture)
        if s:
            Debug.Log(('GUITexture object found: ' + s.name))
        else:
            Debug.Log('No GUITexture object could be found')