GUISettings.cursorFlashSpeed
var cursorFlashSpeed: float;
float cursorFlashSpeed;
cursorFlashSpeed as float
Description

The speed of text field cursor flashes.

This is how many flashes / second. If you set it to 0, flashing will be disabled. If you set it to -1, the flashing speed will match the system default of the end user.
	var str : String = "This is a string with \n two lines of text";
	
	function OnGUI() { 
		GUI.skin.settings.cursorFlashSpeed = 3;
		str = GUILayout.TextArea(str);
	}
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public string str = "This is a string with \n two lines of text";
    void OnGUI() {
        GUI.skin.settings.cursorFlashSpeed = 3;
        str = GUILayout.TextArea(str);
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public str as string = 'This is a string with \n two lines of text'

	def OnGUI() as void:
		GUI.skin.settings.cursorFlashSpeed = 3
		str = GUILayout.TextArea(str)