问题来源如下: 打开/etc/crontab文件,命令如下: yule@yule-ubuntu:~$ vi /etc/crontab 显示如下内容: # /etc/crontab: system-wide crontab# Unlike any other crontab you don't have to run the `crontab'# command to install the new version when you edit this file# and files in /e
http://www.cnblogs.com/royenhome/archive/2010/05/22/1741592.html http://www.codeproject.com/Tips/803656/Practical-Difference-between-Const-ReadOnly http://stackoverflow.com/questions/55984/what-is-the-difference-between-const-and-readonly Apart from
有时候 调试程序的时候 .我们需要防止程序退出.比如调试一个定时服务. 方法1 while(true) {Thread.Sleep(1000)} 方法 2——(推荐) Well when you do that with Thread.Sleep(1000), your processor wastes a tiny amount of time to wake up and do nothing. You could do something similar with CancelationT
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; namespace Share { public class TimeExit { //单例模式 private static readonly TimeExit m_TimeExit = new TimeExit(); public static TimeExit In
在Ubantu OS下,用文件管理器打开系统磁盘下的 boot文件夹,然后用管理员身份打开grub文件夹,然后打开grub.cfg(用记事本打开) 4. 在grub.cfg文件里面找到下一段内容(比较靠下):# This file provides an easy way to add custom menu entries. Simply type the# menu entries you want to add after this comment. Be careful not to c