Python is a powerful, open-source and easy to learn programming language. It is one of the most popular modern programming languages with a huge community of developers and extensive documentation. It usually comes pre-installed on all latest Linux systems as it is one of the building blocks of many operating system tools. Though, based on user requirement, one can install specific version of Python from available sources. In this tutorial, we will show you two ways to install Python on an Ubuntu system − Installing Python using package manager (apt) Installing Python using its source code Using Package ... Read More

Linux is known for its stability, security, and flexibility, and is widely used in enterprise environments. However, as with any operating system, it is important to keep an eye on system performance to ensure that everything is running smoothly. This is where it becomes essential to monitor the users and processes in real time. In this article, we will show how you can monitor Linux users and processes in real time. We'll cover some of the most popular commands used for this purpose such as w, who, last, top, htop. In addition, we will also highlight how to use these ... Read More

Cron jobs are essential for automating tasks on GNU/Linux systems, from backups and system maintenance to scheduled reports and data processing. However, setting up cron jobs correctly is only half the battle. Testing and debugging them is equally crucial to ensure they run as expected and don't introduce unexpected issues. In our comprehensive guide we will explore various techniques for testing and debugging cron jobs in Linux, helping you keep your automated tasks running smoothly. Why Test and Debug Cron Jobs? Cron jobs run in the background, often without direct user interaction. This makes it essential to test and debug ... Read More

Git is a popular open source version control system like CVS or SVN. This article is for those, who are not familiar with Git. Here, we are providing you with basic steps of installing Git from source, Creating a new project, and Commit changes to the Git repository.Difference between Git and other Version Control SystemsMost of the other version control systems, store the data as a list of files and changes are made to each file over time. Instead, Git thinks of its data more like a set of snapshots in a file system. Every time, it takes a snapshot ... Read More

Wine platform is developed for allowing you to run Microsoft Windows applications on Linux and other UNIX-based operating systems (MacOS X, FreeBSD, Solaris). PlayOnLinux is a graphical interface for Wine, which streamlines the installation process of well-known Windows applications and games under Wine platform by automatically configuring Wine as needed.Installing PlayonLinuxTo install playOnLinux use the following command –$ sudo apt-get install playonlinuxThe output should be like this –Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libgail-common liblouis-data liblouis2 python3-brlapi python3-louis python3-pyatspi python3-speechd qt-at-spi xbrlapi Use 'apt-get ... Read More

Are you working as Linux admin? Do you create/delete users in Linux Command line? If yes, then this article is for you guys! After reading the below content, you will be able to manipulate users and group permissions in Linux system.In the below example sai is the username.usermodThe usermod command modifies the approach account records to reflect the alterations which can be targeted on the command line.To get more information about usermod, use the following command –$ usermod --helpThe sample output should be like this –-c, --comment        COMMENT new value of the GECOS field -d, --home HOME_DIR ... Read More

Every Linux distribution comes with some logging systems to record system activities. This might be helpful during system troubleshooting. Rsyslog is an open source and is rocket-fast in terms of speed for system log process. It is available for several major Linux distributions including Debian and Red Hat based systems. Compared to SYSLOG protocol, It has several additional features such as content-based filtering of TCP for transporting and provides tons of configuration options. This article describes how to setup Rsyslog Remote Logging in simple steps.InstallationIf Rsyslog is not installed on your linux system, install using the following command −$ sudo ... Read More

Taskwarrior is an open-source, cross-platform time and task management tool. It has a command-line interface rather than a graphical user interface. If you spend a lot of time on Linux terminal (as a developer or system administrator) then constantly switching to a web app or another GUI based todo applications may not be a very productive thing to do. In that case, you may want to try a simple command line application instead. This article explains How to install Taskwarrior in Ubuntu.To install Taskwarrior, use the following command –$ sudo apt-get install taskThe sample output should be like this –Building ... Read More

Dstats is a versatile resource statistic tool. This instrument combines the capability of iostat, vmstat, netstat, and ifstat. Dstats permits us to watch the server assets in real-time. While you need to collect this know-how in actual-time, Dstat will adjust /suit your requirements. This article explains about how to use Dstat tool to Monitor Linux Server Performance.FeaturesIt combines vmstat, iostat, ifstat, netstat know-how and extraIt shows stats in exactly the equal timeframeIt has the capability to enable/order counters as they make most sense for the period of evaluation/troubleshootingIt is a modular designThis is python program so comfortably extendable for the ... Read More

In this article we will learn about how to set up Postfix on Ubuntu 16.04, Postfix is a very popular open-source MTA (Mail Transfer Agent) which can be used to relay the emails on Ubuntu Linux systems, most of the public mail servers over the real world use the postfix only.PrerequisitesTo complete this demo we needed the followingA machine with Ubuntu 16.04 installed and a non-root user with sudo permissions on the machine.A (FQDN) fully Qualified Domain Name points to the machine.We assume the Domain FQDN mail.mydomain.comInstalling the PostfixAs Postfix is available with Ubuntu default repository we can directly go ... Read More