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The cron daemon performs the task of the trip class within a specified time

Cron is a task that a daemon uses to perform a trip class for a specified period of time. Each user has a crontab file that allows them to specify what needs to be done and when, in addition, the system has a crontab that allows for regular tasks like alternating logs and updating local data. Using Cron, as long as you add some items to the crontab file, a crontab project details the process and time of execution, such as: 5 3 * * * */U ...

Linux lets cron tasks not give back information

What should linux do to keep the tasks in cron from giving back information? This example is a 5-minute check of mail #vi/etc/cron 0-59/5 * * * * * * */usr/local/bin/fetchmail >/dev/http://www.aliyun.com/zixun/aggregation/ 19527.html ">null 2>&1

Linux VPS Server Essential Simple Security configuration Getting Started Tutorial

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall Although the Linux system is higher than Windows security, However, some simple security configuration is also necessary. There are a lot of tools on the Internet to scan your admin password with a dictionary, we can create some trouble and increase the possibility of being deciphered. Look at the entry level security configuration ...

How to test the network connectivity performance of a host

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall How to test the network connectivity performance of the host, we all know to use Ping, but the website service is 24 hours , you can not always go to ping it every once in a while, tired not tired ah! First of all, the DOS ping:ping, this command is the most commonly used PING-T-N 1 ...

11 Linux commands that few people know but are useful

The Linux command line attracts most Linux enthusiasts. A normal Linux user typically has about 50-60 commands to handle daily tasks. Linux commands and their transformations are the most valuable treasures for Linux users, Shell scripting programmers, and administrators.  Few Linux commands are known, but they are handy and useful, whether you're a novice or an advanced user. Little people know about Linux commands the purpose of this article is to introduce some of the less-known Linux commands that are sure to efficiently ...

Six open source monitoring tools which one did you use?

Six open source monitoring tools which one did you use? Published in 2013-03-15 12:22| Times Read | SOURCE csdn| 0 Reviews | The author Zhang Hong Month open source Monitoring Tool Muningangliagraphitepingdom Summary: This article introduced 6 practical monitoring tools, not only can you monitor the network resources, but also monitor the server, user requests, Web performance, etc., to your site to provide comprehensive,  One-stop guidance and monitoring. If you think the site is built, it's all right.

Backup MySQL database with mysqldump

In real life, backing up the database regularly is a very important thing.   When we use MySQL, there is a lot of choice in database backup, and this article will show readers how to use MySQL's mysqldump to back up the database. First, the importance of data backup work, if the accidental deletion of important files or directories, then the result will be miserable. Especially when the data that is accidentally deleted involves important customers or key projects, and the data can't be recreated easily, it doesn't have to be what I say you can imagine. Unfortunately ...

PHP.INI configuration: Session configuration detailed tutorial

For PHP beginners in the PHP runtime environment to set up the configuration is already a headache, not to mention the php.ini configuration, this article in order to achieve the effect of solving practical problems, the first PHP tutorial tutorial on how to pass PHP. ini to configure Session, in order to achieve the basic Session application. We know that in the use of PHP shopping cart, user login and other interactive web site development, Session is a good solution, if using XAMPP, AppServ and other PHP installation package, the general situation ...

Hadoop On Demand Management Guide

Overview Hadoop on Demand (HOD) is a system that can supply and manage independent Hadoop map/reduce and Hadoop Distributed File System (HDFS) instances on a shared cluster. It makes it easy for administrators and users to quickly build and use Hadoop. Hod is also useful for Hadoop developers and testers who can share a physical cluster through hod to test their different versions of Hadoop. Hod relies on resource Manager (RM) to assign nodes ...

Not afraid to lose data VPS Automatic Backup Ultimate Guide

Intermediary trading http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnosis Taobao guest Cloud host technology Hall nearly half a year, has lost 5 of Web site data, mostly due to the damage caused by VPS hard disk, RAID10 in order to speed is very not insurance the last 2 times respectively is directspace and BUYVM so, must backup, make good VPS ready to lose data ready ...

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