In this article, I will take you through the steps to Install Java on Ubuntu 20.04. Java is a very popular Object Oriented Language. It is Known as Platform independent Language due to its ability to run in various hardware architecture platforms. You will see Java based Applications on almost all the digital platforms around ... Read more
In this article, I will explain you about the curl error: Failed Writing received data to disk/application on Linux and the steps to solve this error. This error could show due to various reasons. One of the common reason is the disk space utilization which happened with me. I will take you through the detail ... Read more
In this article, I will take you through the steps to install Java on RHEL 8/CentOS 8. As you might be aware, Java is the most popular and powerful language currently used by Developers and Programmers for Application development on almost all the Hardware Platforms. It is Known as Platform independent Language. It uses an ... Read more
In this tutorial, we will look into the concepts of Wrapper Class in Java along with the mechanism of Autoboxing and Unboxing with examples. The wrapper classes are a place holder for a lot of static members to handle the primitive types. A few common members for all the wrapper classes are described below: All ... Read more
In this article, i will take you through 15 ansible-vault command examples to encrypt and decrypt sensitive data/files on Linux. Vault is a special feature in Ansible implemented using ansible-vault tool to encrypt all the sensitive information like password, variable, data and any other information you want to protect. This tool is frequently used to ... Read more
In this article, I will take you through 25 Best Crontab Command examples in Linux to Schedule Cron Jobs. You might have faced a scenario where you need to schedule a specific Job at certain day and at certain time in your Linux Servers to perform some specific task. This can be easily achieved by ... Read more
In this article, I will take you through the Steps to Install and Configure OpenLDAP Server on RHEL / CentOS 7. LDAP is known as Lightweight Directory Access Protocol which is generally used for Client Authentication to establish a session for running operations like search, read, write etc. LDAP Server are widely used in the ... Read more
Last night I was working on my systems then suddenly saw a lot of Nagios Alerts on Dashboard showing "Socket Timeout" error. Then I went to my Server from where I was getting the nagios alerts and then tried to check the nrpe service status. It seems nrpe was not running then I started troubleshooting ... Read more
In this article we will look into all the possible scenarios which can cause "nrpe.service: main process exited, code=exited, status=2/INVALIDARGUMENT" error and the solution to fix this error. You might have seen this error in a Server where you have installed nrpe client package. Basically Nagios connects the Servers through nrpe client package to gather ... Read more
In this article, i will take you through the best steps to install perl on Ubuntu 20.04. Perl (Practical Extraction and Reporting Language) is a very popular and powerful language for String Handling and String Processing. You will see the usage of Perl as web scripting language along with other web technologies and frameworks. It ... Read more