diff --git a/migrate.php b/migrate.php
index dfeb3bd..7ef8080 100755
--- a/migrate.php
+++ b/migrate.php
@@ -1,213 +1,209 @@
 #!/usr/bin/php
 <?php
 require 'load.php';
 
 // to do not break anything it's better to end with a slash if your domain is short
 $from = $argv[1] ?? null; // "http://test.sangirolamobari.com"
 $to   = $argv[2] ?? null; // "http://www.sangirolamobari.com"
 
-if( !$from ) {
-	echo "Missing FROMURL\n";
-	exit;
-}
-
-if( !$to ) {
-	echo "Missing TOURL\n";
+// no args no party
+if( !$from || !$to ) {
+	echo "Usage: {$argv[0]} FROM_URL TO_URL\n";
 	exit;
 }
 
 // make relative URLs in image pathnames
 foreach( [ 'post_content', 'post_excerpt' ] as $text_columm ) {
 	foreach( [ $from, $to ] as $url ) {
 		// make relative URLs in images
 		$url_attribute = esc_html( $url );
 		( new Query() )
 			->from( 'posts' )
 			->where( 1 )
 			->update( col_replace( $text_columm, " src=\"$url_attribute", ' src="/' ) );
 
 		( new Query() )
 			->from( 'posts' )
 			->where( 1 )
 			->update( col_replace( $text_columm, " href=\"$url_attribute", ' href="/' ) );
 	}
 }
 
 // update all the option values
 $options = ( new Query() )
 	->from( 'options' )
 	->queryGenerator();
 
 // each option must be evaluated manually because they may be serialized
 foreach( $options as $option ) {
 
 	// get the raw value
 	$id    = $option->get( 'option_id'    );
 	$value = $option->get( 'option_value' );
 	$value_unserialized = @unserialize( $value );
 
 	$new_value = null;
 
 	if( $value_unserialized === false ) {
 		if( strpos( $value, $from ) !== false ) {
 			$new_value = url_replace( $from, $to, $value );
 		}
 	} else {
 		if( is_object( $value_unserialized ) ) {
 			replace_object( $from, $to, $value_unserialized, $replaced );
 			if( $replaced ) {
 				$new_value = serialize( $value_unserialized );
 			}
 		} elseif( is_string( $value_unserialized ) ) {
 			if( strpos( $value_unserialized, $from ) !== false ) {
 				$value_unserialized = url_replace( $from, $to, $value_unserialized );
 				$new_value = serialize( $value_unserialized );
 			}
 		}
 	}
 
 	if( $new_value ) {
 		echo "\n";
 		echo "From:\n";
 		echo $value;
 		echo "\n";
 		echo "To:\n";
 		print_r( $new_value );
 
 		echo "\nSave [Y/n]?\n";
 		$y = readline();
 		if( $y === 'y' || empty( $y ) ) {
 			( new Query() )
 				->from( 'options' )
 				->whereStr( 'option_id', $id )
 				->update( [
 					'option_value' => $new_value,
 				] );
 
 			echo "Saved\n";
 		} else {
 			echo "Skipped\n";
 		}
 	} else {
 		echo "Nothing to do from $value\n";
 	}
 }
 
 // update all the option values
 $options = ( new Query() )
 	->from( 'postmeta' )
 	->queryGenerator();
 
 // each option must be evaluated manually because they may be serialized
 foreach( $options as $option ) {
 
 	// get the raw value
 	$id    = $option->get( 'meta_id'    );
 	$value = $option->get( 'meta_value' );
 	$value_unserialized = @unserialize( $value );
 
 	$new_value = null;
 
 	if( $value_unserialized === false ) {
 		if( strpos( $value, $from ) !== false ) {
 			$new_value = url_replace( $from, $to, $value );
 		}
 	} else {
 		if( is_object( $value_unserialized ) ) {
 			replace_object( $from, $to, $value_unserialized, $replaced );
 			if( $replaced ) {
 				$new_value = serialize( $value_unserialized );
 			}
 		} elseif( is_string( $value_unserialized ) ) {
 			if( strpos( $value_unserialized, $from ) !== false ) {
 				$value_unserialized = url_replace( $from, $to, $value_unserialized );
 				$new_value = serialize( $value_unserialized );
 			}
 		}
 	}
 
 	if( $new_value ) {
 		echo "\n";
 		echo "From:\n";
 		echo $value;
 		echo "\n";
 		echo "To:\n";
 		print_r( $new_value );
 
 		echo "\nSave [Y/n]?\n";
 		$y = readline();
 		if( $y === 'y' || empty( $y ) ) {
 			( new Query() )
 				->from( 'postmeta' )
 				->whereStr( 'meta_id', $id )
 				->update( [
 					'meta_value' => $new_value,
 				] );
 
 			echo "Saved\n";
 		} else {
 			echo "Skipped\n";
 		}
 	} else {
 		echo "Nothing to do from $value\n";
 	}
 }
 
 /**
  * Replace something from an object
  */
 function replace_object( $from, $to, $obj, & $replaced = false ) {
 
 	// for each attribute
 	foreach( $obj as $attr => $value ) {
 
 		if( is_object( $value ) ) {
 			// eventually proceed in the leafs
 			replace_object( $from, $to, $value );
 		} elseif( is_string( $value ) ) {
 			if( strpos( $value, $from ) !== false ) {
 				if( is_array( $obj ) ) {
 					$obj[ $attr ] = str_replace( $from, $to, $value );
 				} else {
 					$obj->$attr   = str_replace( $from, $to, $value );
 				}
 				$replaced = true;
 			}
 		}
 	}
 
 }
 
 
 function sql_replace( $col, $from, $to ) {
 	return sprintf(
 		"REPLACE( %s, '%s', '%s' )",
 		$col,
 		esc_sql( $from ),
 		esc_sql( $to )
 	);
 }
 
 function col_replace( $col, $from, $to ) {
 	return new DBCol(
 		$col,
 		sql_replace( $col, $from, $to ),
 		'-'
 	);
 }
 
 /**
  * Replace an URL from a string
  */
 function url_replace( $from, $to, $value ) {
 
 	$value = str_replace( $from, $to, $value );
 
 	// make relative URLs in images
 	$value = str_replace( " src=\"$to", ' src="/', $value );
 
 	// make relative URLs in links
 	$value = str_replace( " href=\"$to", ' href="/', $value );
 
 	return $value;
 }