In this tutorial we will install and configure nagios core 4 on Ubuntu 12.04 LTS. Nagios Core 4 has recently been released,at the time of writing this post Nagios core 4.0.2 was available. Nagios is one of the most popular,reliable and robust Monitoring System.You can find number of plugins to monitor the network and server…
In this tutorial we will learn, how to delete mail queue in Postfix .To clear the mail queue in Postfix, we will use the command called postsuper . Abbreviation of postsuper is Postfix superintendent . postsuper command can only be run by super user of the system eg. root . Postsuper command is used for…
In this tutorial,we will install subversion 1.8 on Ubuntu using apt.We have done this practical in Ubuntu 13.04 and 13.10 version.Generally when you install subversion by using command apt-get install subversion ,it will install the subversion 1.7 .Here we will add the new apt source list for subversion 1.8 . Description: Operating System : Ubuntu…
In this tutorial we will learn, how to install Mariadb 5.5 on Ubuntu 12.04 LTS. After the Sun Microsystems has been acquired by Oracle, we got a new fork of MySQL i.e MariaDB . MariaDB is led by its original developers. MariaDB has XtraDB storage engine for replacing InnoDB .It also has new storage engine…
In this post ,I am sharing the error message ” Another MySQL daemon already running with the same unix socket “. The error found in our own sharadchhetri.com blog while restarting the MySQL server.It is at 6:55 PM IST,I noticed the weird error message on blog,”Error establishing a database connection”.I log into the server and…
In this tutorial we will learn,how to install linux operating system in remote machine with telnet.Sometimes you do not want to keep standing in front of system for installation process.In this practical we will use telnet to install linux O.S in remote machine.We are doing this practical in CentOS 6.5 Install Linux O.S in Remote…
Problem of the day : Virtual Machine inaccessible status on VirtualBox 4.3 . Today while working in VirtualBox 4.3 ,I got an issue.The Virtual Machine got the status “inaccessible” .After searching in VirtualBox related directories and commands,I finally able to resolve the issue.For resolving this issue,we will use command line.We have another option i.e by…
In this post I am sharing a small and useful tip about, how to know last command run successfully in Linux and Unix .The post will explain ,to get the exit status of command used last time. As a System Engineer, sometimes I have to check the success status of last command I run on…
In this post we will learn,how to add excerpt on wordpress Thematic child theme . Thematic framework is highly SEO optimized and it is also free. It is very simple, clean and lightweight. While working on Thematic framework,I enjoyed a lot. From scratch,I started creating a child theme on Thematic framework and modified many things.There…
This post is about , create fixed top navigation menu bar on wordpress themeWordPress theme . This is actually a small css trick to put the Navigation Menu bar at top of website at fixed position. I expect you have the div id of the navigation menu bar. In my scenario,the div id of navigation…
Here in this post,we will learn very useful alias command with examples.In linux and Unix like operating system,mainly we use the alias command to shorten the long command.It is something like instead of writing long command in terminal,you type a few letters on terminal and your desired command get run. To understand the meaning of…
In this tutorial we will learn about,how to add favicon in WordPress theme and child theme.Favicon is important for branding of the site.Many website and blog are running on WordPress.If you are using a wordpress theme which do not have favicon option,you can add by this method.I used this code in theme which I have…
Error : This kernel requires an x86-64 CPU,but only detected an i686 CPU.Unable to boot – please use a kernel appropriate for your CPU . This error is commonly seen when you try to install a new Operating System in Virtual Box.The error occur mostly comes due to user mistake. Before going further ,first check…
vim is a free and open source text editor. vim stands from Vi IMproved,it is based upon vi editor. vim can be used in command line as well in Graphical User Mode. Vim editor was developed by Bram Moolenar. The installation of vim in Linux Mint is very simple and quick.Follow the simple steps to…
Owncloud 6 installation error: Your data directory and files are probably accessible from the internet because the .htaccess file does not work. For information how to properly configure your server, please see the documentation. We are sharing the troubleshooting steps, which we have done while installation Owncloud 6 in Ubuntu 13.10 Server To solve this…