• How to Resize/Increase the Virtual Disk “LVM” of a Xen DomU Guest Virtual Machine

    In this mini post, I’ll show you how to resize/increase the size of the virtual hard disk used in a Xen DomU virtual machine “guest”.Read More

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  • How to Find and Kill Zombie Processes on Linux Systems

    In this mini post I’ll show you how to find and kill all zombie processes that may exist on your Linux Systems. First, we needRead More

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  • How to Install Xen Hypervisor on Debian 9 “Stretch” and Debian 8 “Jessie” Linux Systems

    In this article, we will discuss the installation of Xen hypervisor server on Linux systems (Debian Family “Debian 9 “Stretch” and Debian 8 “Jessie” /UbuntuRead More

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  • Howto remove/resolve Openvpn message “KEY_CONFIG pointing to the wrong version of openssl.cnf” on Linux Systems

    In this mini post I’ll show you how to  solve this Openvpn error message “KEY_CONFIG pointing to the wrong version of openssl.cnf” which may appearsRead More

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  • How to Move/Migrate a Full Git Repository

    In this post, I’ll show you how to move a full git repository from github to gitlab. We’ve an old repository existing on github andRead More

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Howto reset AUTO_INCREMENT from a table in MySQL/MariaDB Databases

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In this post, I’ll show you how to reset the auto_increment field from a table in MySQL/MariaDB databases. Sometimes you need to drop all the data in an existing table and reset the auto_increment to start from 1. This post is dealing with only resetting the auto_increment to 1. ToRead More

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Howto delete a column from a table in MySQL/MariaDB Databases

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In this post, I’ll show you how to drop a column from a table in MySQL/MariaDB databases. Sometimes you need to drop a wrongly created column in your table, or sometimes when you deploy a rails application and there is a database migration, if the deploy fail for any reasonRead More

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How to Install the Latest Stable Google Chrome on Ubuntu 16.04 LTS

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In this post, we will show you how to install the latest stable google chrome browser on Linux systems (Debian Family “Ubuntu 16.04 LTS and Debian 8 Jessie ”). This tutorial is for Linux beginners and experts, showing 2 ways to install Google Chrome on Ubuntu 16.04 LTS Xenial. TheRead More

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How to Upgrade MariaDB 5.5 to MariaDB 10.1 on CentOS 7 Linux Systems

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In this post, we will show you how to Upgrade MariaDB 5.5 to MariaDB 10.1 on Linux systems (RPM Family “Redhat /CentOS /Scientific Linux 7 and newer releases of Fedora ”). This tutorial will help you to upgrade the default  shipped MariaDB 5.5 with CentOS/RHEL  7 to The latest stableRead More

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How to Create and Drop database in MongoDB NoSQL Database Servers

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In earlier articles we have provided the steps to install MongoDB on CentOS and RHEL or Ubuntu and Debian Systems. Now find this article to how to create and drop database in MongoDB NoSQL database server in a very easy steps 1. Create Database in MongoDB It’s strange to listenRead More

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How to Create and Drop Users in MongoDB NoSQL Database Servers

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In this post, we’ll show you the users administration basics in MongoDB database server. MongoDB is a nosql database server. The default installation provides you the access of database using mongo command through command line without authentication. In this tutorial you will learn how to create users in Mongodb serverRead More

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How to Configure Static DNS on CentOS/Redhat/Fedora Linux Systems

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If you want to hard-code DNS servers to use on CentOS or Fedora, the method can differ, depending on whether you use Network Manager or network service. On RHEL based systems, Network Manager is used to manage network interfaces by default, while you can switch to network service. Configure staticRead More

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How to Use Wget Command on Linux Systems with Examples (Wget Download Examples)

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In this post, we’ll show you how to use wget command on Linux systems. Here’s you’ll find some important examples. wget utility is the best option to download files from internet. wget can pretty much handle all complex download situations including large file downloads, recursive downloads, non-interactive downloads, multiple fileRead More

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How to prevent a package from being updated in Debian/Ubuntu Linux Systems

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If you want to update all the packages other than one in your Debian server follow this procedure There are three ways of holding back packages, with dpkg, aptitude or with dselect. Option1: Using dpkg Put a package on hold echo “package hold” | dpkg –set-selections Example echo “apache2 hold”Read More

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How to Manage Packages in Debian/Ubuntu Linux Systems Using apt-get and dpkg Commands

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In this post, we’ll show you how to manage packages in Debian/Ubuntu Linux systems. Being able to install, remove, update, etc.. packages in Debian Linux systems is very important task for everyone “users and administrators” which increase your OS performance and removes security threads. Debian and Ubuntu Linux provides aRead More

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