How to Undo or Redo a Yum Install on CentOS and RHEL

One of the most important and useful feature added to YUM Package Manager (from version 3.2.25) is the 'yum history' command. It allows you to review a full history of yum transactions that have been run on a system. It shows the dates and times when a transactions were performed, whether the transactions succeeded or were aborted, the number of packages affected, and so much more. Learn More

3 open source distributed tracing tools

Distributed tracing systems enable users to track a request through a software system that is distributed across multiple applications, services, and databases as well as intermediaries like proxies. This allows for a deeper understanding of what is happening within the software system. These systems produce graphical representations that show how much time the request took on each step and list each known step. Learn More

Happy Birthday, GNU: Why I still love GNU 35 years later

GNU was publicly announced on September 27, 1983, and today has a strong following.

GNU is...
- an operating system
- an extensive collection of computer software
- free software
- licensed under the GNU Project's own General Public License (GPL) Learn More

Linus Torvalds and Linux Code of Conduct: 7 myths debunked

No, protesting programmers are not removing code from Linux; there are no purges of politically incorrect Linux kernel developers. And Linus Torvalds is coming back. Learn More

A sysadmin's guide to Ansible: How to simplify tasks

In my previous article, I discussed how to use Ansible to patch systems and install applications. In this article, I'll show you how to do other things with Ansible that will make your life as a sysadmin easier. First, though, I want to share why I came to Ansible. Learn More

Python's founder steps down, India's new net neutrality regulations, and more open source news

In this edition of our open source news roundup, we take a look Python's founder stepping down, India's new net neutrality regulations, O'Reilly's thoughts about tech giants, and more. Learn More

Convert video using Handbrake

Recently, when my son asked me to digitally convert some old DVDs of his high school basketball games, I immediately knew I would use Handbrake. It is an open source package that has all the tools necessary to easily convert video into formats that can be played on MacOS, Windows, Linux, iOS, Android, and other platforms. Learn More

Get rich with Firefox or *(int *)NULL = 0 trying: Automated bug-bounty hunter build touted

Do you love Firefox, Linux, and the internet? Are you interested in earning money from the comfort of your own home? Are you OK with a special flavor of Firefox quietly gobbling up memory in a hunt for exploitable security bugs?

If so, Mozilla has a deal for you. Learn More

How Linux Makes Your Life Easier

There is a popular myth that Linux is complicated and hard to use by a non-techie. While there are distros and advanced Linux functionality that do require tech skills, this doesn’t mean Linux is hard to use. On the contrary, there are lots of things in the philosophy and functionality of Linux that make a user’s life easier. Learn More


How to Install MongoDB on Debian 9

In today’s article we are going to show you how to install MongoDB on Debian 9. MongoDB is a free and open-source NoSQL document-oriented database which is platform oriented. It stores all data in documents using JSON format (BSON) which makes the data to be highly flexible. MongoDB comes in Community and Enterprise editions. The Enterprise edition provides additional administration, authentication, and monitoring features. Community edition is the free and open source release of MongoDB and we will install it in this tutorial on a Debiab 9 VPS.


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