Linux

The compression format in Linux is mainly composed of GZ, bz2, XZ, compress, zipOne, gzip: after compression format is. GZ (after compression and decompression, the original file is deleted)Usage: gzip [optinons] FILENAME ...-D: Decompression,

1. First prepare two hosts, one to do the server, one to do the client, to ensure that the two can communicate with each otherServer IP Address:192.168.4.5Client IP Address:192.168.4.2052. Configuring NFS Services for the server[Email protected]/]#

1, source Package preparation:First download the jdk,http://www.oracle.com/technetwork/java/javase/downloads/website jdk7-downloads-1880260.html, I download jdk-7u45-linux-x64.tar.gz, download to home directory2. Unzip the source packageCreate a new

Linux version: CentOS 6.2ISO File: Http://mirrors.163.com/centos/6.2/isos/i386/CentOS-6.2-i386-bin-DVD1.iso1. Installing the JDKFirst Use Java command to see if the system is installed with the default OpenJDK , if installed, it is recommended to

The code below, there are comments, should be able to read.functiongetFile (file_name)Localf =assert(Io.open(file_name,'R')) LocalString = F:read ("*all") F:close ()returnstringEndfunctionWriteFile (file_name,string)Localf

1: Open the virtual machine, click the ' Start ' button,2: When the above interface appears, the keyboard input ' I ', the Grub interface appears:3: Keyboard input E, the following interface appears:4: Select the second row (kernel ... ）5: Keyboard

1. Modify the/etc/profile fileThis approach is recommended if your computer is used only as a development, because all user shells have the right to use these environment variables, which can pose a security issue for the system.(1) Open/etc/profile

Reprinted from: http://www.cnblogs.com/itech/archive/2009/04/10/1433052.html1.Linux Link ConceptThere are two types of Linux links, one called hard links, and the other called Symbolic links (symbolic link). By default, the LN command produces a

Tomcat the installation and configurationA. Installation and configuration of JDK1. Upload the JDK to Linux via FTP2. Installation Steps-cd/home/guest # Back to the/home/guest directory-CP jdk-1_5_0_06-linux-i586.bin/usr/jlocal # Copy to copy the

Linux Advanced Skills: rsync synchronization (2), linuxrsync1. Configure synchronization between two nodesThe previous post shows how to synchronize a host. This time, we will add another host to be synchronized. The method is of no quality.1. First,

Linux Advanced Skills: rsync synchronization (1), linuxrsync1. rsync IntroductionRsyncIs an application software in Unix. It can synchronously update files and directories of two computers and use differential encoding to reduce data transmission.

How to Set IP (red hat) and linuxhat in Linux The two steps are as follows: 1: Use the setup command to set the IP address Save ...... -- Return to the front, with DNS Save and exit ...... 2: restart the network service. In the vmwarevirtual

Linux Advanced Skills: rsync synchronization (2)1. Configure synchronization between two nodesThe previous post shows how to synchronize a host. This time, we will add another host to be synchronized. The method is of no quality.1. First, display

In linux, the root password is missing. Solution: linuxroot 1: Open the VM, click 'start, 2: When the above interface is displayed, enter 'I' on the keyboard to display the grub interface:   3: Enter e on the keyboard. The following page is

Count multiple CPU utilization in Centos I. source of the problem MySQL is multi-threaded in Linux and can only distribute multiple threads to one CPU. Therefore, in enterprises, using small servers or PC servers, the utilization of multiple CPUs is

CentOS switch command Command Overview Shutdown, poweroff, reboot, halt, and init can all be shut down for general usage. /Sbin/halt [-n] [-w] [-d] [-f] [-I] [-p] [-h]/Sbin/reboot [-n] [-w] [-d] [-f] [-I]/Sbin/poweroff [-n] [-w] [-d] [-f] [-I] [-h] [

CentOS 6.3 automatically mounts disks and folders upon startup CentOS 6.3 automatically mounts disks and folders upon startup The CentOS server may have multiple disks but suddenly loses power. The previously manually attached disk is no longer in

Linux kernel design and implementation-kernel SynchronizationKernel synchronization introduces the concept of Synchronization Critical section: it is also called a critical section, which is a code segment for accessing and operating shared

Linux Advanced Skills: heartbeat + lvs (3)Previously, we tested both LVS and heartbeat separately. It was time to merge them.1. LVS + heartbeat:First, display our console:To enable the two software to collaborate with each other and enable the

Linux Kernel-memory managementMemory Management page The kernel uses physical pages as the basic unit of memory management. Memory Management Units (MMU) Manage memory and convert virtual addresses to physical addresses are usually processed in