The Debian-based systems use the vixie-cron its replacement mcron system, which allows declaring environment variables in the crontab file. For example: LANG=nb_NO.UTF-8 LC_ALL=nb_NO.UTF-8 * * * * * echo “Hello world"1234LANG=nb_NO.UTF-8LC_ALL=nb_NO.UTF-8 * * * * * echo “Hello world” The RedHat and Arch Linux systems use cronie that uses standard Unix crond daemon. This doesn’t allow for the declaration of environment variables in the crontab file. But, we can still use this with the crontab per entry: * * * * * export LC_ALL=nb_NO....

What is new in store? For those who are not familiar with the concept, NAS is basically a home server with a high storage capacity. Think of it as a storage unit capable of supplying data to all your devices. However, it is also more than just that, as it represents a computer itself. Hence, you can utilize it as a DLNA server in order to stream without a support of the PC....

Install Zstandard on Linux The Ubuntu users can install it directory from base repositories. Open a terminal and run the following command to install zstd on Debian based systems. Use following commands to install Zstd on CentOS, Red Hat and Fedora systems. For the Linux systems don’t include zstd packages to there repositories can compile from source. Download the latest Zstandard release from GitHub and extract on your system. Now compile it using make....

The Problem: When I tried to check the Maven version on our macOS PC, I got the following error in the output. The Solution: As the error message clearly shows that the JAVA_HOME environment variable is not set on my PC. So the simple solution is to set it correctly. Use the below steps to resolve this issue. The macOS 10.5 (Catalina) and later version use the Zsh as the default shell....

We can use dig command to query various dns servers to fetch records like address record, CNAME, TXT, Mail exchange records etc… I also found an useful website showmydns.net to search dns records from multiple locations world wide. This guide explains you to how to use Linux dig command line utility with practical examples. dig Command in Linux The dig utility is available under default repositories on most of the Unix/Linux operating systems....

In this tutorial, you will learn to launch MySQL Docker containers along with phpMyAdmin docker container using docker-compose command. Prerequisites This guide assumes that you have already done the followings: How to Create MySQL with phpMyAdmin Docker Container phpMyAdmin is an most popular web application for managing MySQL database servers. In this tutorial, we just use an example of Docker container for MySQL and phpMyAdmin. So first create a docker-compose....

In this tutorial, you will find instructions to download Ubuntu 20.04 LTS Focal Fossa ISO images from official site. Also you will learn how to download images with zsync command line utility. Ubuntu 20.04 LTS Download Links Select your favorite Desktop edition and use below links to download the required editions. Ubuntu 20.04 LTS DesktopUbuntu 20.04 64-bit PC (AMD64) desktop image Ubuntu 20.04 64-bit PC (AMD64) desktop torrent Download Ubuntu ISO with Curl Wget and curl is the frequently used commands for downloading files over ftp, http protocols....

This tutorial will help you to find Python version details inside a script. Also, you can ensure a Python script to run only the minimum version found. Output: You can also find the details version info by using sys.version_info like below: Show the Python hex version details. This value increases with every release of python. Using Assert in Python You can ensure a script runs with the minimal version required for your application....

SELinux Modes: SELinux has three modes to run. By default, SELinux runs in Enforcing mode on CentOS 7 Enforcing – SELinux security policy is enforced. Permissive – SELinux allows access but prints warnings on rules voilation. Disabled – No SELinux policy is loaded. Check SELinux Status You can use getenforce command to view the status of SELinux. Another command sestatus gives you more details about SELinux status. Press CTRL+ALT+T to launch a terminal and type: The above status shows that SELinux is enabled and enforcing....

SFTP is recommended but in case you only have the FTP server running on remote, use below link for FTP access. How to Download and Upload Files using FTP Command Line Connect to SFTP Server: SFTP connects to ssh server. You must have the ssh server running on the remote system. Use the following command to connect example.com server as user rahul. to connect with different port How to Use SSH to Connect Remote Linux Server...

Using TLS 1.2 with PHP CURL Forcefully You can add the following code to your curl requests to use TLS 1.2. Use 6 as the value of CURLOPT_SSLVERSION forces cURL to use TLS 1.2. Below is the sample code to force use tls 1.2 with php curl: For the example, I am using a sample script from our another articlesubmitting JSON data with cURL and PHP. In that script, we will add code to forece use of tls 1....

This tutorial will help you to install Ansible on Debian 8 (Jessie) systems. Step 1 – Configure SSH Access You can configure key based ssh for the remote Linux Ansible hosts. So password will not be required for SSH. Ansible also allows you to use a password for ssh, but key-based ssh is more secure. Generate a ssh key pair on your Ansible server: Copy the public key to all your remote hosts you need to connect via this ssh key....

This tutorial provides you with step-by-step instructions to install Apache Kafka on Ubuntu 22.04 LTS Linux system. You will also learn to create topics in Kafka and run producer and consumer nodes. Prerequisites You must have sudo privileged account access to the Ubuntu 22.04 Linux system. Step 1 – Installing Java We can run the Apache Kafka server on systems that support Java. So make sure, you have Java installed on your Ubuntu system....

Install Java on Ubuntu 20.04 Java 11 is the latest LTS release available for installation. The default Ubuntu packages repositories contain the packages for the OpenJDK 11. The default repository also contains OpenJDK 8 previous stable release packages. The JDK packages provide the full Java development libraries, helpful for the development systems. To run any Java application, you just needed a Java runtime environment (JRE). 1. Install Java 11 on Ubuntu Run the below command to install OpenJDK 11 package on your system....

Step 1 – Setup LAMP Server First of all, configure the LAMP server on your system. Execute the following commands from the system terminal for the installation of a LAMP server. First, add the required PPA repository in your system. Now install the packages for Apache, PHP, and MySQL using the below commands. Step 2 – Download Joomla CMS Download the latest version of Joomla CMS archive from the official GitHub repository....

Step 1 – Prerequisites Before starting the installation of MySQL using this tutorial you must have the following prerequisites Terminal: You must have Mac Terminal access and little knowledge about working with the terminal application. Homebrew: Homebrew is a popular package management tools used for installing most open source software like Node. Here is the Homebrew installation tutorial Step 2 – Install MySQL on macOS At this time of writing this tutorial, Homebrew has MySQL 5....

Why NVM ? NVM has a number of benefits: It allows installation of multiple node versions on single system and easily switch between them Nvm install all the node version for the current user only. So it will not make any conflict between other system accounts Easier to switch between different downloaded versions of Node.js with ease. Installing NVM on Fedora A shell script is available for the installation of nvm on Fedora Linux systems....

In simple terms, a VPN connects your Mobile, Computer, and Tablet to another computer (server) over the internet and allows you to access the internet using that computer’s internet and also access the local network resource by bypassing internet censorship remotely. In this tutorial, we will show you how to install and configure the OpenVPN server on CentOS 8. Step 1 – Disable SELinux Before starting, it is a good idea to disable the SELinux in your system....

Install PHP7, Nginx and MySQL on CentOS/RedHat Configure Yum Repository First of all, you need to enable Remi and EPEL yum repositories on your system. Use the following command to install EPEL repository on your CentOS and Red Hat 7/6 systems Use this command to install epel-release yum repository and now execute one of the following commands as per your operating system version to install Remi repository. Install PHP 7 on CentOS 6 Your system is prepared for the PHP installation from yum repositories....

The pgAdmin is a feature-rich web-based interface for the administration, development, and management of PostgreSQL. It is also an open-source, free software just like PostgreSQL. In this how-to guide we will learn to install PostgreSQL and pgAdmin4 on CentOS 8: How to Install PostgreSQL on CentOS 8 Multiple versions of PostgreSQL are available in a default repository of CentOS 8. They can be listed on the terminal by using the below-given command: There are four different versions available in the AppStream repository on my system....