// this script pushes all rigidbodies that the character touches
var pushPower = 2.0;
function OnControllerColliderHit (hit : ControllerColliderHit) {
    var body : Rigidbody = hit.collider.attachedRigidbody;
    // no rigidbody
    if (body == null || body.isKinematic)
        return;
        
    // We dont want to push objects below us
    if (hit.moveDirection.y < -0.3) 
        return;
    
    // Calculate push direction from move direction, 
    // we only push objects to the sides never up and down
    var pushDir : Vector3 = Vector3 (hit.moveDirection.x, 0, hit.moveDirection.z);

    // If you know how fast your character is trying to move,
    // then you can also multiply the push velocity by that.
    
    // Apply the push
    body.velocity = pushDir * pushPower;
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public float pushPower = 2.0F;
    void OnControllerColliderHit(ControllerColliderHit hit) {
        Rigidbody body = hit.collider.attachedRigidbody;
        if (body == null || body.isKinematic)
            return;
        
        if (hit.moveDirection.y < -0.3F)
            return;
        
        Vector3 pushDir = new Vector3(hit.moveDirection.x, 0, hit.moveDirection.z);
        body.velocity = pushDir * pushPower;
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public pushPower as single = 2.0F

    def OnControllerColliderHit(hit as ControllerColliderHit):
        body as Rigidbody = hit.collider.attachedRigidbody
        if (body == null) or body.isKinematic:
            return
        if hit.moveDirection.y < (-0.3F):
            return
        pushDir as Vector3 = Vector3(hit.moveDirection.x, 0, hit.moveDirection.z)
        body.velocity = (pushDir * pushPower)