In this post,I am sharing a useful option with linux grep command.In this tutorial, we will use grep command to show lines after and before the keyword . As a Linux System Engineer, sometimes I get the requirement to print lines above and below of a particular keyword in the file. Generally if you only…
In this tutorial we will learn about, how to install vshell frontend on Nagios Core 4 Ubuntu 12.04 LTS. Nagios vshell is php based web interface for Nagios Core.It is lightweight and easy to customize. To get the details of Nagios Vshell , here is the link. To install vshell frontend on Nagios Core 4…
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 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…
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…
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…
In this tutorial we will learn,how to install Owncloud 6 in Ubuntu 13.10 Server.Recently, the Owncloud community has released its new verison called Owncloud 6. Owncloud is one the best alternative for Dropbox and Google Drive. You can self host the Owncloud very quickly in short span of time.You can access,share and sync the data…
Recently,Linux Mint 16 (“Petra”) has been released on November-30-2013.Linux Mint 16 is based on Ubuntu 13.10 (Saucy). The latest Linux Mint 16 will be supported until July 2014(The last release Linux 15 “Olivia” is supported until January 2014). In this tutorial we will upgarde Linux Mint 15 (Olivia) to Linux 16 (Petra). In this practical…
In this post,we are sharing a tip to change Port number for Octopress. By-default when we run the command rake preview in Octopress setup ,it runs on port number 4000 . Here in this practical we will change the default port no. 4000 of Octopress to some other port no. Note: Always select custom port…