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Docker is an open source application similar to a virtual machine. It is used to simplify the process of automation of applications deployment with its runtime dependencies within Linux containers. Containers, which work independently from the host operating system, enable users to perform quick application deployment, troubleshooting and maintenance with improved security.

When a Linux system has an out-of-memory error or runs out of RAM, .i.e. can no longer store data in the virtual memory, it will temporarily use swap space in order to increase the size of the virtual memory available. A swap file or one or multiple dedicated swap partitions can be used by the Linux system on a logical volume or a regular filesystem

Ubuntu logs system events into the log files in order to help administrators maintain, analyze and diagnose system related issues and applications problems. Log files contain messages related to kernel, services and applications events that are kept on a centralized repository of log files under /var/log directory. In this article, we will provide an overview of Ubuntu log files, and show how to configure and use syslogd. You will also learn how log rotation works and how to view and read the log files. A brief introduction to systemd will be provided at the end .

There are many GUI applications on Linux that help optimize and compress images while retaining the original quality. In this article we will use two command-line based utilities , jpegoptim and OptiPNG. Let’s get started.

Oftentimes you need to run a command every X seconds on Linux. Granted you can use cron but unfortunately, it does not handle time granularities of less than a minute.

Startup applications are the programs that are launched automatically when Ubuntu boots up. Sometimes you want to make an application start after you log in to the system, like for instance a chat app or fan controller app, etc..

Ubuntu automatically assigns an IP address to the network via DHCP (Dynamic Host Configuration Protocol ). It will continue to get such a dynamic IP (keeps changing) address until you decide to change it to a static one. Ubuntu has switched to the YAML based Netplan for configuring a network since release 18.04

Coding is an essential part in the life of developers. Building good applications or web pages requires a good and reliable code editor or IDE. More and more developers are choosing Linux over other operating systems for the purpose of coding applications these days

So you installed the latest version of a Linux distribution but want to switch to another variant of Linux or want to upgrade to the latest version of a Linux distribution and prefer a clean install over regular upgrade ? Doing this will surely make you lose your personal data

In this article, you will learn how to install and remove deb packages in Ubuntu. Deb packages are files which have the extension .deb much like .exe in windows. Once you click on a .deb file, it will launch an installation procedure of the corresponding application.

Fdisk is used to manipulate the disk partitions and its types like GPT, MBR, Sun, SGI, and BSD partitions. Fdisk is available as part of the Linux utils commands .We will be exploring some of the many usages of Fdisk in this article.

Sometimes when users try to install an application by executing the usual apt command on Ubuntu, they get the following error: E: Could not get lock /var/lib/dpkg/lock’. In this article we will shall provide some effective methods to get rid of this kind of errors.

The web hosting industry has blown up in recent years, and therefore making for an increasingly competitive market. Web hosting companies have now had to adapt, evolve and keep their prices lateral or less than their competitors. Hosting providers are clamoring to offer the extra features, stronger security, better support, faster performance, or easiest design tools needed to attract your business.

Many users, beginners and advanced are sometimes confused on how the PATH environment variable is handled on Linux. Why are there so many files .bash_profile, .bashrc,.profile , .bash_login ? In this short article, we will try to clear up this confusion and will also explain how to add a path to PATH on Linux as well as provide a glimpse inon the different files involved and the way the way are invoked.

To copy a file from another machine, you can use the scp utility. In this short tutorial you will see how to achieve this using simple commands.

In this short article, we shall provide a simple explanation of the differences between login and non-login shells as well as between interactive and non-interactive shells.

Nowadays, Linux hosting is used by many if not by most Web hosting providers. If you have a small website, you won’t care too much about which OS is hosting your website since all what you are interested in is speed, availability and reliability of your website host. As your website grows big along with your number of visitors however, you will want to be very selective when it comes to hosting your resource-demanding website.

Node.js is an an open source JavaScript development platform for general purpose programming that enables users to build applications that need a persistent connection from the client (browser) to the server. Node.js is useful for real time applications such as web push notifications, chat, news feeds…

To zip all files in a given directory on Linux with the zip tool, you can use * with the zip command. This will take care of files with and without extensions since extensions are not so special on Linux. The * will match zero or more characters, with the dot included. The files that begin with a dot however are not considered when using * (or even *.*)

A lot of Linux users carry out a long running task on a remote destination without taking into account the possibility that the connection might break. In such situations, notwithstanding financial losses for large and small corporations, they will lose their work as well as their time since when they try to reconnect again, the remote task is no longer running.