Linux

Go to the/etc/sysconfig/directory and run the vi command to edit the SuSEfirewall2 file.-> # vi SuSEfirewall2: Find FW_SERVICES_EXT_TCP in the file, add a service name or port corresponding to the service, for example, SSH, FW_SERVICES_EXT_TCP =

Fedora18 hard drive installation of ISO ora18 is released on schedule, try to directly use GRUB2 LOOP device can be directly installed, eliminating the trouble of ISO pressure. Convenience. The command www.2cto.com is as follows: grub> loopback loop

Common Parameters for linux network configuration and ifconfigifconfig are described as follows: -a: view the status of all NICs-V: view the version information of the ifconfig command-s: view the statistical information. Example: Set the IP address

Add PPA source 1, sudo cp/etc/apt/sources to ubuntu. list/etc/apt/sources. list_backup // backup 2. sudo gedit/etc/apt/sources. list ============================== www.2cto.com Add a PPA source to ubuntu: =============================================

Ubuntu 12.04 has changed the custom Startup Mode from Ubuntu to Unity. In some cases, you need to add a custom startup mode for a third-party program, which is easier to find in the search, it can also be easily attached to the launcher. The

The first Unix Shell function has a beginning for everything. There is a saying that it is difficult to start with everything. No matter how the road goes, take every step at your feet. Today, I got started with Unix shell functions and wrote a

Establish a trust relationship between the two servers 1. run the ssh-keygen command on the clien machine to generate the certificate www.2cto.com ssh-keygen-B 1024-t dsaGenerating public/private rsa key pair. enter file in which to save the key

Using drbd for real-time data backup this article is not suitable for use in the production environment. The key lies in a simple understanding of the configuration and working methods of drbd. In this exampleData is stored on two servers and will

A few months ago started a turn of the WNR3500L, this route known as open source and third-party firmware support is very attractive to me, the first start of the first brush the DD-WRT and then changed to TOMATO, after switching to TOMATO, you can

The linux noup command runs the program nohup in the background & after the console logout, the process continues to run and serves as a daemon (although it is not a strict Daemon ). After the nohup command is used, the standard output of the

Basic configuration after CentOS6_mini_x64 installation 1. disable SELinux www.2cto.com # vim/etc/selinux/config ***************************** * **************************** SELINUX = disabledSELINUXTYPE = targeted ***** *****************************

In linux, if you use ssh authentication and do not enter a password to access another machine, LINUX programmers will encounter remote login issues in their daily work. Is it annoying to enter a password every time. www.2cto.com. I am here to figure

The crontab scheduled task under freebsd cannot be automatically executed for troubleshooting. Two scheduled tasks were configured last night. One root user, one common user, and two scripts were executed on the terminal, but at work in the morning,

I. Introduction I have been using Linux for a long time. I have never studied hard tasks and system learning. Recently, I have to use MySQL in Linux for my work. I thought that I had experience using SQL Server in Windows and thought it would be

RHCE test Disk Quota1. Create a user who needs to limit the quota 2. modify the configuration file and add the quota parameters.Modify the configuration file # vim/etc/fstab; add usrquota (quotas for users) and kgquota (quotas for groups) after

First, we will introduce the situation that both server A and server B are CentOS 4.6 systems. Now we need to build an HA Cluster. To avoid split-brain attacks, we need to improve the reliability of the heartbeat link, it is the current connection

# Platform DriverAll device drivers in Linux must be registered to the system platform. This operation is completed by a set of functions defined in platform_device.h. Let's take a look at the struct platform_driver:View plaincopy to clipboardprint?

First install cygwin, this is very simple here not described, give download link http://cygwin.com/setup.exe remember to install vim and OpenSSh and cygrunsrv Step 1 start the SSH serviceRun the following command:Start the ssh service using

  Author: graynight Basic course 1-shell text processing tool Bash shell * Matches zero or multiple characters. ? Match any single character History and Tab play the same role in vro switches. How to return to the main directory: 1.cd 2.cd/root 3/cd

Based on the previous lessons, I believe that you should have a detailed understanding of users and user groups. So what should I do if I want to see which users are currently logged in and want to communicate with a user in the system? This is what