Author: Rahul

I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

This tutorial will help to install JAVA (OpenJDK) on all versions of Ubuntu, Debian, and LinuxMint systems. You can also use this tutorial to install Java on any Debian based systems. Let’s follow the below simple steps for the installation. Install Oracle JAVA 8 on Ubuntu & LinuxMint Install Oracle JAVA 9 on Ubuntu & LinuxMint Step 1 – Search OpenJDK Packages OpenJDK packages are available under native apt repositories. You can simply use apt-cache search command to search the available java version for your Ubuntu system. apt-cache search openjdk As per above output, you can see openjdk-11-* and openjdk-8-*…

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Question – How to reset WordPress admin password via SQL query? How to reset WordPress admin password using phpMyAdmin? How to Reset WordPress forgotten password with SQL query? How to find WordPress default admin password? If you have forgotten your SugarCRM admin password or due to any reason, you are not able to login to SugarCRM with admin user. You can simply check the active admin user using SQL query and reset the password with simple SQL query. Reset WordPress Admin Password via SQL The first query will fetch show the details of the administrator account based on username.

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Question. I am running a Linux system (Ubuntu) system. Its root user has 100K emails to their mailbox. How do I remove all emails from the root mailbox? How can I remove all emails using shell prompt on Linux system? This tutorial will help you delete all root user emails from the shell in the Linux system. Here you will find two methods to remove user emails in a Linux system with a single command. Method 1: You can simply remove all emails of root or any other user on the Linux system using the following command. echo ‘d *’…

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Nagios is a popular open-source monitoring system that can be used to monitor the availability and performance of various resources, such as servers, networks, and services. One way to extend the capabilities of Nagios is by creating custom plugins using bash scripts. Here is a general outline of the steps involved in creating a Nagios plugin using a bash script: It is important to note that a Nagios plugin should be designed to run quickly and efficiently, as it will be executed at regular intervals. This means that the plugin should avoid performing any unnecessary or time-consuming tasks, and should…

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Phusion Passenger is an application server which can be integrated into web server like Apache and Nginx and allows to serve Ruby/Rails applications via the web server. It’s a good option to deploy Ruby on Rails application on productions systems. This article will help you to deploy Ruby app with Nginx on Linux systems like Ubuntu and Debian systems. You can use this tutorial for staging as well as production deployments. First of all, we assume you already have Ruby installed on your system. If you do not have Ruby installed on your system, Use one of below URL to…

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Phusion Passenger is an application server which can be integrated into web server like Apache and Nginx web servers and allows to serve Ruby/Rails applications via the web server. It’s a good option to deploy Ruby on Rails application on productions systems. This article will help you to deploy Ruby app with Apache on Linux systems like Ubuntu and Debian systems. You can use this tutorial for staging as well as production deployments. First of all, we assume you already have Ruby installed on your system. If you do not have Ruby installed on your system, Use one of below…

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Fedora 27 release has been delayed. Now it’s supposed to be released in the first week of November. Fedora 27 has various software upgrades, security patches than the previous version. Fedora 27 Release Schedule Find below release schedule for Fedora 27. The final version is supposed to be released on Oct 24, 2017, But all the dates are subject to change. Please visit Fedora official web page for any change. Date Stage Status Jul 12, 2017 Development Started Completed Sep 05, 2017 Beta freeze Completed Sep 19, 2017 Beta Release Completed Oct 10, 2017 Final Freeze Completed Nov 07, 2017…

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Phusion Passenger is an application server which can be integrated into web server like Apache and Nginx web servers and allows to serve Ruby/Rails applications via the web server. It’s a good option to deploy Ruby on Rails application on productions systems. This article will help you to deploy Ruby on Rails application with Nginx on Linux systems like CentOS 7/6 and Fedora 27/26. You can use this tutorial for staging as well as production deployments. First of all, we assume you already have Ruby installed on your system. If you do not have Ruby installed, use below URL to…

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This tutorial is helpful to verify that you are using correct Private key, or Certificate. You may face an issue when your certificate does not match to the private key and throws an error. Method 1 – Using OpenSSL and MD5 In the first method, The md5 value of certificate, key, and CSR should be same for all to work properly. If any of md5 is different means that file doesn’t relate to others. $ openssl rsa -noout -modulus -in example.key | openssl md5 $ openssl req -noout -modulus -in example.csr | openssl md5 $ openssl x509 -noout -modulus -in…

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Creating files and folders with names based on the current date and time is a crucial aspect of organizing data, automating backups, and logging in Windows environments. Windows Batch Script, the scripting language for Windows Command Prompt, offers straightforward methods to incorporate date and time stamps into your filenames and directory names. This article explores how to achieve this, ensuring your scripts can dynamically generate unique and descriptive names. Understanding Windows Batch Script Date & Time In Windows Batch Script, the %DATE% and %TIME% environment variables provide the current date and time, respectively. However, their format is influenced by the…

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