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Unix-like operating systems decouple the user name from the user identity, so you may safely change the name without affecting the ID. All permissions, files, etc are tied to your identity (uid), not your username. To manage every aspect of the user database, you use the usermod tool. 1- To change username (it is probably best to do this without ...

Java With the Best Virtual Conference is your guide to Microservices, Java 9, Kubernetes and everything else Java! Tune in April 17th-18th to access 50+ live Java tech talks by industry-leaders from companies like Pivotal, RedHat, Microsoft, Oracle and Netflix. Our featured speakers include:   Reza Rahman (CapTech) – Java EE 8 and the Open Future of Java EE – ...

Linux is all about simplicity. Simple and time-tested tools like iptables, netstat and rsync can be called for help for basic tasks instead of untrusted third-party tools as happens in case of Windows. If you are a desktop user, then taking frequent backups of your data to a pen-drive or external disk is a typical problem to solve. In this ...

With the growing adoption of containerization, many developers are no longer struggling with the woes of code environmental inconsistencies. While containers have solved important problems, new questions have arisen over how to effectively manage and scale them. Products like Kubernetes have been born out of an attempt to solve these issues. Yet, what exactly is Kubernetes? Kubernetes is essentially a ...

I’ve been writing the TWIN4j blog for almost a year now and during that time I’ve written a few different asciidoc macros to avoid repetition. The most recent one I wrote does the formatting around the Featured Community Member of the Week. I call it like this from the asciidoc, passing in the name of the person and a link ...

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By nature, Docker containers are temporary. Yet as anyone who runs containers via Cron can tell you, it’s not always so great at cleaning up after itself. In today’s article, we are going to explore two flags that make it easier to run Dockerized Cron jobs. Before we get too far into this article, let’s explore how we would traditionally ...

In a past role I helped put together a rather expansive travel agency booking project to show some of the more interesting feature of JBoss BPM Suite. The project continued to expand over time, adding on not just a bookings process, but also a payment process that included advanced features like compensation (rolling back bookings), integration of traditional web services in service tasks ...

For some reason, if your school or workplace is using Microsoft Office365/Outlook for all communication, you can configure your Linux e-mail client to support most of those features such as e-mail, calendar, and contacts working. Sometime back, support for Microsoft Exchange-based services was very buggy in open-source e-mail clients like Thunderbird and Evolution. But they have come a long way ...