Vitaliy Orlov

find -name "*.xls" -exec sh -c 'cp "$1" `echo $1 | grep -o -E "[0-9]+"`.xls' sh {} \;

find -name "*.xls" -exec sh -c 'mv "$1" `echo $1 | grep -o -E "[0-9]+"`.xls' sh {} \;

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);
   }
}