Linux

Routine Job Schedule-crontab and anacrontab 1. Syntax: www.2cto.com [root @ www ~] # Crontab [-u username] [-l |-e |-r] Options and parameters:-u: only root can perform this task, that is, to help other users create/remove crontab work schedules;-e:

Xubuntu learning Summary (2) Installation of hadoop1.04 ssh password-free login failure 1. install ssh sudo apt-get install ssh. 2. install rsync sudo apt-get install rsync 3. configure ssh password-free logon to www.2cto.com ssh-keygen-t rsa-p'-f ~

Ubuntu server construction-use apache to build the svn server to install the subversion and the corresponding apache module. Here we assume that the server has been installed, participate in Server Installation www.2cto.com $ sudo apt-get install

To understand the average load of Linux processors, you may have a full understanding of the average load of Linux. The average load value can be seen in the uptime or top command. They may look like this: www.2cto.com load average: 0.09, 0.05, 0.01.

Kubuntu12.04 (KDE) sets the Brightness of the screen (Brightness) and touchpad. These two days, Kubuntu12.04 (ubuntu unity) is installed on the Asus X43B series notebook.Interface is really not used, mainly because the User-Defined is not used),

How to Make BT4 U disk boot disk required software: ① UltraISO; ② grubinst; ③ grub4dos; ④ bt4-pre-final.iso 1. open the bt4-pre-final.iso file with ultraiso, select write hard disk image, write in USB-HDD ++ 2. open the grubinst software and select

Solve the problem that tracker occupies a large amount of CPU in linux.During the use of fedora, sometimes the CPU temperature will suddenly increase. Normally, the CPU temperature is 39 ~ About 45 degrees, and then run the top command under

Advantages and disadvantages of Linux Device Driver dynamic kernel insertion and direct integration into the Kernel Analysis Introduction: The company made a Linux-based Ethernet interface board, which is currently maintained by me, the main CPU of

Vim configuration file types and loading sequence. for basic configurations, see: version. Vim configuration files are divided into three types: versionVIM-Vi IMproved 7.3 (2010 Aug 15, compiled Oct 29 2011 18:46:03) system vimrc file: "$ VIM/vimrc"

Git version control puppet # git and puppet can be found in other documents # cd/etc/puppet/# git init # initialize git # git add * # add all files in the directory to git cache # mkdir-p/data/git/# git commit-m "/etc/puppet" # submit # git clone --

In the Linux bash shell single terminal interface for job switching and Offline Management in the front and back of Linux, we often need to manage or complete multiple jobs at the same time, such as performing compilation while implementing data

Specify the type of the variable: Use the declare or typeset declare/typeset option-r read-only declare-r var1 (declare-r var1 and readonly var1 are exactly the same) this is the same as the const keyword in C language. It is used to specify the

LVS + Keepalived for high-availability Load Balancing I. Principle 1. Summary if you divide TCP/IP into five layers, Keepalived is similar ~ Software with layer-5 switching mechanism, with 3 ~ The layer-5 switching function is mainly used to detect

Linux dmesg command details Function Description: displays the boot information. Syntax: dmesg [-cn] [-s] Note: The kernel stores the boot information in the ring buffer. If the information cannot be viewed during startup, you can use dmesg to view

CSWs cannot index soft links outside the code tree to solve the problem. Background: Why do I have to use CSWs? Do not use ctags?Although ctags can index soft links, ctags cannot find "callers". For example, you want to see where a function is

The reboot command of AIX must be used with caution to shut down the reboot command in the AIX system. I talked with my colleagues a few days ago about a previous problem and said why the machine was shut down after reboot, I had to run the data

SVN settings ignore file listVersion Control for projects in the company generally uses centralized SVN. I am also familiar with basic version management concepts and operations from svn tools. However, as a Linux System and Application Developer,

Detailed description of centos Nic configuration under the VPS server automatically activates the NIC and installs CENTOS 6. after X, you need to manually activate the NIC every time you start the system. The following methods can be used to

The latest version of Zebra installation and configuration is version 0.94. This is the latest version of Zebra after the first modified version of Quagga is released. My compiling and running environment is Redhat Linux 7.3, and the kernel is 2.4.20

Centos 6.3 vnc connection -- catalog is not properly configured, attempting to determine an appropriate font p Abstract: in linux, using VNC to connect to remote desktop is often used. Here, we will introduce how to connect to the remote desktop