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Cacti is an open source web based network monitoring tool front-end for the data logging tool called RRDtool. It’s allow users to check the services at an interval of time and resulting in the graph format.

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Logwatch is a system log analyzer and reporter. This tutorial covers the installation of Logwtach and explains various config options incl. reporting of notable log events by email.

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Virtualmin is a Webmin module for managing multiple virtual hosts through a single interface, like Plesk or Cpanel. It supports the creation and management of Apache virtual hosts, BIND DNS domains, MySQL databases, and mailboxes and aliases with Sendmail or Postfix. It makes use of the existing Webmin modules for these servers, and so should work with any existing system configuration, rather than needing it’s own mail server, web server and so on.

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We all know that we can download videos from popular websites like YouTube, Metacafe, Vimeo etc. There are many applications available to download from those sites. But, the problem is some websites doesn’t allow you to save videos to a different format. You can only download the videos in the given format by those sites. Ofcourse, there are plenty of tools available to convert the downloaded videos to different formats. However, downloading videos using one tool, and then convert them to another format using another tool might be definitely time wasting process. This is where ClipGrab comes in handy.

Ben Hutchings, the maintainer of the Linux 3.2 kernel branch, had the pleasure of announcing the immediate availability for download and upgrade of a new maintenance release for Linux kernel 3.2, version 3.2.67, urging users to update to it as soon as possible. Linux 3.2.67 kernel is a long-term supported version mostly used on very stable environments or embedded systems.

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Access Control List (ACL) provides an additional, more flexible permission mechanism for file systems. ACLs allow you to provide different levels of access to files and folders for different users. It is designed to assist with UNIX file permissions. ACL allows you to give permissions for any user or group to any disc resource.

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This document describes how to upgrade from Ubuntu 12.04 to Ubuntu 14.04 LTS. Generally, the Ubuntu .04 versions that get released every 2 years are Long Term Support (LTS) releases, for instance Ubuntu 12.04, 14.04 etc. Effectively, this means that the LTS release comes supported with bug fixes and security updates for as long as 5 years, hence users would not have the privilege of being alerted through popups urging them to install the latest available version.

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Xibo is a great content management system that can be used for Digital Signage which is a form of electronic display used to show messages to the public mainly in the advertisement industry. It is free of charge and this tutorial will help you to learn how to install it on an Ubuntu machine.

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This document describes how to install and configure WordPress MU with the latest version in market of WordPress 4 on Ubuntu 14.04. WordPress started in 2003 with a single bit of code to enhance the typography of everyday writing and with fewer users than you can count on your fingers and toes. Since then it has grown to be the largest self-hosted blogging tool in the world, used on millions of sites and seen by tens of millions of people every day. This tutorial explains the process of installing WordPress 4.0 on Ubuntu 14.04 in the form of a simple-to-follow guide.

Linux is omnipresent, even if you don‘t realize it. I have been using Linux as my only OS since 2005 and with every passing year I come to realize that it has much more to offer than I initially, back in 2005, understood. There is something for everyone. In this article, I have picked some of the best Linux distros to help you get the job done.

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This method should work on ESXi/Vsphere/Vmware Workstation. Please follow the following instructions, It is same for installing vmware tools for linux.

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As you may know, CIA, Confidentiality/Integrity/Availability, is the main key elements of Information Security. The main Job of a System Administrator/Security expert is to protect the data from unauthorized access, use, disclosure, disruption, destruction, and modification. There are n number of tools and methods are available out there to secure your data. The one we will discuss today is VeraCrypt.

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Quota allows you to specify limits on two aspects of disk storage: the number of inodes a user or a group of users may possess; and the number of disk blocks that may be allocated to a user or a group of users. The idea behind quota is that users are forced to stay under their disk consumption limit, taking away their ability to consume unlimited disk space on a system. Quota is handled on a per user, per file system basis. If there is more than one file system which a user is expected to create files, then quota must be set for each file system separately. Various tools are available for you to administer and automate quota policies on your system.

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During every login or bootup, the OS performs a number of tasks in the background to get the OS up and running and ready to be used. Customizations in Linux OS like Ubuntu can be done very easily, that allows an user to add any number of "custom" tasks or programs to the system to be performed every time the user logs in or boots up the OS.

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WordPress is the most popular CMS (content management system) on the internet. It allows you to easily set up flexible blogs and websites on top of a MySQL backend with PHP processing. WordPress has seen incredible adoption and is a great choice for getting a website up and running quickly.

Data is the crucial bit in our personal and professional existence. Without data we would be lost in a vast expanse of nothingness. Spreadsheets, email, documents, contacts, databases, files, folders … the list goes on and on. In a perfect world, every byte of local storage would be backed up to an external hard drive or cloud storage service.

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This brief tutorial describes how to remove the password protection from the PDF files. Please note that we are not going to hack or crack the password of PDF file. Instead, we just remove the known password of the PDF file using qpdf application from Terminal. It is really easy and fun. Let us get started.

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This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data. I will use gdisk to copy the partition scheme, so it will work with large harddisks with GPT (GUID Partition Table) too.

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There are many novice users that want to get their hands dirty with CentOS maybe because they want to learn something new or maybe because their default operating system does not fit their needs anymore so I thought to write this detailed guide on how to install CentOS on a machine.

Installing a World of Warcraft addon is easy, you must simply extract a zip into the game‘s AddOns folder however, updating them manually is pretty time-consuming, even if you only use a few addons, because you must check if the addon has a new release, then download the new version, extract the zip - all of this manually and for each addon.

There are so many reasons why you might be considering the migration to SUSE or openSUSE. For some, it’s the logical step to integrating Linux into a business environment (SUSE paid support is phenomenal and the openSUSE community is always at the ready to help). To others, it’s one of the most power-user friendly Linux distributions on the market.

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Tonido is a cross platform, free, open source application that allows you to access all files on your computer from a web browser, smartphone, tablet or even DLNA enabled devices. You can access your files from anywhere, and ofcourse you can share them to your friends, family, and colleagues as well. Additionally, you can create a secure private share that only authorized people are allowed to access them. As you’re the only person to access or share your files to others, you have a private and secure Cloud on your hand.

Cloud is a buzzword these days; everyone is moving to the cloud even if most of us don’t even know what it actually means. To me, cloud is a fictional place that processes and stores my data; in the process it liberates me from that one device where my data is stored. With ‘Cloud’ I can access my data from any networked device.

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In this article I will give you an overveiw on the smartmontools which is a set of applications that can test hard drives, automatically notify you when the failure rate rises and read the harddisk SMART statistics to detect failures early. I will cover installation, usage on the shell and the smartmon GNOME gui in this tutorial.

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In past tutorials, we have added one-time passwords to OpenVPN and created a WiKID server using Packer. In this tutorial we create a combined Openvpn/WiKID server using packer. Packer allows us to create VMware, VirtualBox, EC2, GCE, Docker, etc images using code. Note that combining your two-factor authentication server and vpn server on one box may or may not be the best solution for you. We typically like separation of duties for security and flexibility. However, if you need something fast - the PCI auditors arrive Monday - or you are in a repressive state and just need a secure outbound connection for a short period of time. And you still have some flexibility. You can add more services to the WiKID server. You can disable the Openvpn server and instead switch to a different VPN.

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Access Control List (ACL) provides an additional, more flexible permission mechanism for file systems. ACLs allow you to provide different levels of access to files and folders for different users. It is designed to assist with UNIX file permissions. ACL allows you to give permissions for any user or group to any disc resource.

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OpenCart is a popular open source shopping cart solution and provides elegantly written tools to establish a fully functional online store from scratch in a very short me with intuitive screens.It is a free open source ecommerce platform for online merchants.

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Achieving good performance from a computer or network is an important part of system administration.The monitoring and maintenance of the system is the most important task listed in the checklists for daily tasks of a system and network administrator. There are many commands line utilities created for this purpose.

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SchoolTool is a free, open source, web-based student information system for a single school. It can be used to manage any of the following records a school might keep:

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Nikto Web-scanner is a open source web-server scanner which can be used to scan the web-servers for malicious programs and files. Nikto can be used to scan the outdated versions of programs too. Nikto will provide us a quick and easy scan to find out the dangerous files and programs in server, At the end of scan result with a log file. Using nikto we can scan http, https, httpd traffics too.

Everyone has their personal favorite programs, but some users are more serious about their software than others. One such group includes the people at LinuxQuestions. These are Linux experts who are kind enough to answer newbies‘ endless questions. So when they pick out their favorite Linux distributions and open-source programs, I take their opinions seriously.

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If you’re managing Debian or Ubuntu servers, probably, you may use dpkg or apt-get commands often. These two commands are used to install, remove, update packages.