Linux

Write Cache command--syncAfter starting the UNIX system with the reboot command, the system prompts for an error message and some applications do not work correctly. After careful examination of the system files, and compared with the initial

There are two different types of links, soft links and hard links, here we only discuss soft links. A soft link is actually a pointer to a file. You will find this soft link easy to use.I. Using soft links to save multiple images of a fileLet's

Linux If the firewall is just installed when we commonly used port is not added, that is, can not access, then how to add the common port to the firewall through the state, the following we take 80 port as an example. Recently I was learning Linux.

1. Configure the Environment Operating system: CentOS 5.2 Download linux-2.6.18 version of kernel, URL: http://www.kernel.org Description: The compiled document is suitable for 2.6. More than 18 of the Linux kernel version,

what is daemon and services (service)Linux Daemon (daemon) is a special process running in the background. It is independent of the control terminal and periodically performs some sort of task or waits for certain events to be processed. It does not

First you'll think of the DD command.But1, if the small hard drive is OK, the big hard drive on t is not high efficiency;2, moreover, DD is a hardware-level copy, the front of the MBR will also be restored to another disk, if the source hard disk is

SendMail ConfigurationYum-y Update SendMail SENDMAIL-CFSendMail Related Categories1. Configuration file directory:/etc/mail2. Record:/var/log/maillog3. Temporary directory of received correspondence:/var/spool/mail/4. Temporary catalogue of Outgoing

There is a time useless Kali Linux, plus recently installed system has more, system root password forget, really trouble ah. Some of the methods I saw on the internet did not go in after trying, probably because different Linux is not the same.If

1. In the following network protocol, the connection-oriented protocol is: A.A Transmission Protocol B User Datagram Protocol C Internet Protocol D Inter-network Control Message Protocol2. In the file system load parameters specified in

This article address:http://www.cnblogs.com/archimedes/p/linux-envionment-variables.html, reprint please indicate source address.1. What are environment variablesBash Shell uses a feature called environment variables to store information about shell

0, Linux commands are divided into:Internal command: Command inside the shellExternal command: A command stored in a file or scriptHow do I see whether a command is an internal or external command? A: Using the type command, use type commands1. help

1. See if VSFTP is installedRpm–qa|grep vsftpdIf the vsftpd-2.0.5-16.el5_5.1 instructions are installed VsftpInstalling VSFTPYum-y Install VSFTPD2. Test whether the installation is successful (IP to yourself ah, do not use my login for anonymous

One, FTP server WU-FTPD ftp is one of the most basic, common, and popular information service systems on the Internet that allows users to log on to a remote computer on the Internet, transfer files to their computer, or transfer files from their

After configuring SSH password-free login for CentOS, you are still prompted to enter the password Perform the following three steps to configure SSH password-less logon in CentOS: Generate public and private keys Import the public key to the

Configuration record of apache + openssl in linux I recently studied the apache-ssl configuration in linux. I am very careful about writing this configuration. I am sorry to ask new users to send a blog.Software EnvironmentApache Httpd 2.2.29 (http:/

Set shortcuts for ssh Login and ssh Login Configure in your own environment ~ /. Ssh/config Host k231 HostName 192.168.1.231User kyee The original ssh Login 192.168.1.231 command is the ssh kyee@192.168.1.231 After the configuration is

Common Software management in Centos Linux software package installation method: 1. rpm package installation 2. Yum (solves dependencies and facilitates Software Package upgrade) 3. source code compilation and Installation I. rpm package management:

Introduction to message-oriented middleware Apache Qpid Overview: Qpid is an object-oriented message-oriented middleware developed by Apache. It is an AMQP implementation that can communicate with other systems that comply with the AMQP protocol.

Create fsimage and edits source code analysis for Hadoop-2.4.1 Learning In Hadoop, fsimage stores the latest checkpoint information, and edits stores changes in the namespace after the latest checkpoint. When analyzing the source code of hdfs

Haproxy-1.5.x SSL Configuration The haproxy-1.4 version agent is always used, and ssl configuration is not supported, the haproxy-1.5 version is supported, so the version is updated for testing. You can use the original apache ssl Certificate file