Category Archive: Debian

Mar 10 2016

How to configure Nginx with free Let’s Encrypt SSL certificate on Debian or Ubuntu Linux

In this tutorial, I will explain how to use Let’s Encrypt to obtain a free SSL certificate and use it with Nginx on Ubuntu or Debian Linux. Source: How to configure Nginx with free Let’s Encrypt SSL certificate on Debian or Ubuntu Linux (nixCraft)

Jan 25 2016

Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux

Explain how to undo or rollback an apt-get install command on a Debian or Ubuntu or Mint Linux. Source: Rollback an apt-get upgrade if something goes wrong on Debian / Ubuntu Linux (nixCraft)

Dec 05 2015

How to disable Ipv6 on Ubuntu, Linux Mint, Debian

So if ipv6 is not supported on your network infrastructure, it might be useful to disable it all together. Why ? It can cause issues like delayed domain lookups, un-necessary attempts to connect to ipv6 addresses causing delay in network connection etc. Source: How to disable Ipv6 on Ubuntu, Linux Mint, Debian (BinaryTides) (This is …

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Aug 02 2015

Build your own NAS with OpenMediaVault

OpenMediaVault is a Debian based special purpose Linux Distribution to build a Network Attached Storage (NAS) System. It provides an easy to use web-based interface, Multilanguage support, Volume Management, Monitoring and a plugin system to extend it with LDAP, Bittorrent, and iSCSI capabilities. This tutorial describes the installation and configuration of OpenMediaVault. Source: Build your own NAS …

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Apr 21 2015

Link: How to Install and Configure NTP (Network Time Protocol) Server/Client in Debian Linux

Network Time Protocol (NTP) presents an unique ability for companies to synchronize the clocks of all the systems within the company. Time synchronization is important for many reasons ranging from application time stamps to security to proper log entries. When an organization’s systems all maintain different clock times, it becomes very difficult from a troubleshooting …

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Jan 27 2015

Link: Linux Basics: How To Check If A Package Is Installed Or Not In Ubuntu

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. In this brief tutorial, let us see how to check if a package is installed or not in DEB based systems. Full article here: Linux Basics: How To Check …

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Dec 15 2014

Link: How To Add Launchpad PPAs In Debian Via `add-apt-repository` Command

“add-apt-repository” is an Ubuntu-specific script to add or remove repositories which, among others, automatically imports the public GPG key. For more information, see its man page. You can use “add-apt-repository” in Debian to add Launchpad PPAs however, there are a few things that you should know. Read on to find out how to use “add-apt-repository” …

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Dec 09 2014

Link: How to Setup a Complete Mail Server (Postfix) using ‘SquirrelMail’ (Webmail) on Ubuntu/Debian

Creating a mail server on Linux powered machines can be one of the most essential things that every system administrator needs to do while configuring his servers for the first time, if you don’t know what it means; it’s simple, if you have a website like “”, you can create an email account like “” …

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Dec 08 2014

Link: Monitorix – An Open Source, Lightweight System Monitoring Tool For Linux

Monitorix is a free, Open Source monitoring tool that can be used to monitor as many services and system resources as possible. Unlike other monitoring tools, it is very simple to install, configure and monitor the systems. Initially, it was developed to support only the RPM based systems such as Red Hat, CentOS etc., but, …

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Oct 31 2014

Link: Debian-goodies: A must-have Set of Utilities For Debian/Ubuntu Administrators

Are you a Debian/Ubuntu Administrator or a regular user, then you may use the dpkg and APT commands often. These commands are used to install, remove, update or upgrade a package or the whole system. Mostly, we use the above two tools only for our day to day operations, But believe me, there are many …

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