Creating and Updating Nodes Programmatically in Drupal 7

gistfile1.php

<?php
/**
* Basic Node Creation Example for Drupal 7
*
* This example:
* - Assumes a standard Drupal 7 installation
* - Does not verify that the field values are correct
*/
$body_text = 'This is the body text I want entered with the node.';

$node = new stdClass();
$node->type = 'article';
node_object_prepare($node);

$node->title    = 'Node Created Programmatically on ' . date('c');
$node->language = LANGUAGE_NONE;

$node->body[$node->language][0]['value']   = $body_text;
$node->body[$node->language][0]['summary'] = text_summary($body_text);
$node->body[$node->language][0]['format']  = 'filtered_html';

$path = 'content/programmatically_created_node_' . date('YmdHis');
$node->path = array('alias' => $path);

node_save($node);

// (c) http://www.group42.ca/creating_and_updating_nodes_programmatically_in_drupal_7
// One more: http://timonweb.com/how-programmatically-create-nodes-comments-and-taxonomies-drupal-7