Vitaliy Orlov

0   0   1   1   *   команда-запуска-форматирования-жесткого-диска >/dev/null 2>&1

using System;
using System.Timers;

public class Demo {
   private static Timer timer;

   public static void Main() {
      timer = new System.Timers.Timer();
      timer.Interval = 1000;

      timer.Elapsed += OnTimedEvent;
      timer.AutoReset = true;
      timer.Enabled = true;

      Console.WriteLine("Press the Enter key to exit anytime... ");
      Console.ReadLine();
   }

   private static void OnTimedEvent(Object source, System.Timers.ElapsedEventArgs e) {
      Console.WriteLine("Raised: {0}", e.SignalTime);
   }
}

if (el<= 400){
  setTimeout(function(){
      var ti  = setInterval(function(){
              $( 'div:not(.test)' ).addClass('test');
              if ( !$( 'div:not(.test)' ).length ) {
                 clearInterval(ti);
              }
      }, 150);
  }, 1000);

window.addEventListener('load', function() {
    if (location.hash=='#btn') {
         console.log('Press btn');
    }
})

.test:hover ~ .test2
{
    color:red;
}

DROP PROCEDURE add_parent_id_to_city;

DELIMITER //
CREATE PROCEDURE add_parent_id_to_city ()
BEGIN
    DECLARE i INT DEFAULT 4700;
    WHILE (i > 0) DO
      SELECT 1+2 as result;
      SET i = i - 1;
    END WHILE;
END//

1. journalctl -xe
   
2. df -h
   
3. ls -Al /var/lib/mysql
   

DELETE FROM b_iblock_section WHERE IBLOCK_ID=4 LIMIT 100

DELETE FROM b_iblock_section WHERE id IN ( 
	SELECT * FROM (
		SELECT ID FROM b_iblock_section WHERE IBLOCK_ID=4 LIMIT 0,100
	) as `id`
)