Linux

After dbca*** all instances of the database, I wanted to clone the DB in rman duplicate mode, so I created the relevant directory under the $oracle_base directory Admin/dupl/adump ,admin/dupl/dpump    in use sqlplus normal connection idle instance,

Ln is another very important command in Linux, its function is to create a file in another location with a non-link, the most common parameter of this command is-s, the specific use is: Ln–s source file Destination file. when we need to use the same

Installing the Software[email protected] ~]# Yum grouplistVirtualizationVirtualization ClientVirtualization PlatformVirtualization ToolsCentos6.4-minimal-64bit default is 200 packages[email protected] ~]# Yum install libvirt python-virtinst

There is nothing wrong with installing Kali on a virtual machine, there is a problem installing on the physical machine.The first choice is install, is the text installation, the installation of the time after the choice of national language, to

There are some things that are perfect for a day before a holiday, but it's definitely not a good place to take a look before you get ready to eat ... Last week I met such a worried thing, eventually ended with hypoglycemia, very embarrassed to go

First, Socket basic knowledge 1. Socket functionSocket hierarchyThe socket essentially provides the endpoint of the process communication, before the process communicates, the two parties must first create an endpoint individually, otherwise there

There is no doubt that you need a configuration file. It is said that the configuration file can make your system customizable. There are three major trends in customizing the system, which determine the format of the three configuration files: 1.

To decompress a 2G zip file to the virtual machine, the built-in content is not fully recognized. You have to install this. I found an article and it should be executable. However, I am re-installing the VM now, and the/OPT option is too small .. Ah.

Sysbench is an open-source multi-threaded performance testing tool that can perform performance tests on CPU, memory, thread, IO, and database. The database currently supports MySQL, Oracle, and PostgreSQL. This article only briefly demonstrates the

1. Steps for installing the rpm package:1. Find the corresponding software package, such as soft. version. rpm, and download it to a local directory;2. Open a terminal and su-become the root user;3. directory where cd soft. version. rpm is located;4.

1. Concepts of users and groups1. Understand the multi-user and multi-task features of linuxLinux is a real and complete multi-user multi-task operating system. Multi-user multi-task means that multiple users can be created on the system, multiple

Change the system time of the US vps to Beijing time.When using vps outside China, you may feel that the time on vps is not Beijing time and it is awkward. Today we will change it back to Beijing time. First, log on to your vps, use the date command

1. FTP Installation1. Check whether FTP is installed: [root @ localhost ~] # Rpm-q vsftpd If installed, the following version information is displayed:[Root @ localhost ~] # Vsftpd-2.0.5-16.el5_5.1 Otherwise: [root @ localhost ~] # Package vsftpd is

The compressed files in linuxlinuxinclude .tar.gz,.zip,.gz. in linux, you must renew the days when .rar is absent.For details, refer to tar and zip commands.Tar-zcvf/home/files.tar.gz/filesThe full path of the file name generated after tar-zcvf is

This article presents 10 UNIX Command Line habits worth using-a good habit of helping you overcome many common usage quirks and improve the efficiency of command line work in this process. These 10 good habits are listed below, and a more detailed

Ntp server in Linux 1. What is ntp? Network Time Protocol (NTP) is a Protocol used to synchronize the computer's Time. It can synchronize the computer's server or clock source, it provides high-precision time correction. 2. Introduction to the ntp

1. Linux is a multi-user, multi-task operating system, including user accounts and group accounts.Sub-Account (ordinary user account, Super User Account) in addition to the user account, there is also a group account, the so-called group account is

Web Server stress (load) Testing Tool SiegeAn open-source stress testing tool that allows you to perform concurrent access to multiple users on a WEB Site Based on configurations, recording the corresponding time of all request processes of each

Rsync is an efficient remote data backup tool. The port number of this service is 873, Is a non-independent service under Liunx, managed by the xinetd super service, instead of listening to port 873. Advantages: 1. rsync can use ssh and ssl remote

I. Introduction What is LAMP?LAMP is a Web application and development environment. It is short for Linux, Apache, MySQL, Php/Perl. Each letter represents a component, each component is a very powerful component represented by it.The term LAMP first