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How to use the sipcalc Linux command line tool

The sipcalc command prevents hard CIDR calculations and helps your fellow sysadmins adhere to the CIDR house rules.
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What’s the next Linux workload that you plan to containerize?

What’s the next Linux workload that you plan to containerize?

You’re convinced that containers are a good thing, but what’s the next workload to push to a container?
khess
Tue, 2/9/2021 at 8:18pm

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Image by Gerd Altmann from Pixabay

I’m sure many of my fellow sysadmins have been tasked with cutting costs, making infrastructure more usable, making services more accessible, enhancing security, and enabling developers to be more autonomous when working with their test, development, and staging environments. You might have started your virtualization efforts by moving some web sites to containers. You might also have moved an application or two as well. This poll focuses on the next workload that you plan to containerize.

Topics:  
Linux  
Linux Administration  
Containers  
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So, you are a Linux kernel programmer and you want to do some automated testing…

ktest: Automated Testing For Kernel ProgrammersOracle Linux kernel developer Daniel Jordan contributes this post on ktest, a tool for making kernel programmers’ lives easier.In October 2010, Steven Rostedtannouncedon the LKML that he was working on a script calledktest.plto automate certain aspects of Linux kernel testing. The script is aimed at individual kernel programmers testing their patch series, and provides an alternative to the Autotest framework,…

Click to Read More at Oracle Linux Kernel Development

How to manage Linux container registries

There are many options to manage Linux container registries using the registries.conf file.
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Sysadmin hardware: Considerations for planning a PC build 

Sysadmin hardware: Considerations for planning a PC build 

There are many considerations when it comes to putting together a new PC. You must consider the purpose, hardware compatibility, and cost. Follow my steps as I put together a new gaming system.
tcarriga
Tue, 2/9/2021 at 4:14am

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photo by Tyler Carrigan

Disclaimer: In 2021, building and buying computers has seen an enormous uptick. Combine the demand for components with the manufacturing and shipping delays caused by current events, and you have a very tough market to jump into. The newest graphics cards and CPUs can be difficult to find markup. Despite this, the information below will be helpful when planning your next build. 

Topics:  
Linux  
Hardware  
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Linux is the Most in Demand Skill Amongst Hiring Managers – Here’s How You Can Take Advantage

Linux powers modern technologies, from the internet and cloud to supercomputers and mobile phones. That’s why the 2020 Open Source Jobs Report found that 74% of hiring managers are looking for Linux talent, more than any other skill. If you want to work on today’s hottest technologies, you need to have a solid understanding of Linux.

At the same time, 93% of hiring managers reported they are having trouble finding qualified talent for these positions, the highest level in the history of this report. That means now is the time to jumpstart your IT career with Linux training and certification!

To help more folks earn a qualification to start or advance their IT career with Linux, we are offering substantial discounts for one week only!

If you’re totally new to the IT industry and are looking for a way to break in, our new Linux Foundation Certified IT Associate (LFCA) is the place to start. This multiple choice certification exam tests your knowledge of entry level IT concepts including Linux, system administration, cloud, security and more. We offer a variety of free courses and resources to help you prepare, which you can see on our LFCA resources page. This certification provides confidence to potential employers that you have the ability to carry out the duties of an entry level IT administrator.

Through February 16, 2021, you can purchase the LFCA exam for only $125 (regularly $200) using code ITSTART at checkout.

If you’d like to take that a step further, you can also add our Essentials of Linux System Administration (LFS201) training course and related Linux Foundation Certified System Administrator (LFCS) exam to the LFCA. The LFCS is an intermediate certification that helps demonstrate your skills in Linux system administration, and provides you with a credential demonstrating your ability to start work as a system administrator.

The bundle of LFCA + LFS201 + LFCS is only $249 (a $799 value) through February 16, 2021 with code ITCAREER. Enroll here.

Finally, if you feel ready to commit to a comprehensive course of study, we’re offering a power bundle to build a broad, deep set of skills. Progress from entry level (LFCA) to intermediate administrator (LFCS) to full engineer (LFCE), with the training you need to succeed. For only $279 (a $1397 value), you will get:

You will have one year from date of purchase to complete the four courses and three exams, but when you come out the other side you will have three highly respected industry certifications that will demonstrate that you have the knowledge, skills and tenacity to step into a Linux engineering role.

Use code ITPOWER to take advantage of this offer through February 16, 2021.

You can read more about all the special offers this month and take advantage of them here.

The post Linux is the Most in Demand Skill Amongst Hiring Managers – Here’s How You Can Take Advantage appeared first on Linux Foundation – Training.

So, you are a Linux kernel programmer and you want to do some automated testing…

So, you are a Linux kernel programmer and are looking for ways to do some automated testing.

ktest can build a kernel on a host system, boot it on a target machine, and run a script on the target. It’s up to you how far in the process ktest will go, so it’s possible to build, or build and boot, or do all three steps.

Click to Read More at Oracle Linux Kernel Development

Using Irssi inside a Linux tmux session

Using Irssi inside a Linux tmux session

If you like IRC, you’ll love the Irssi client, especially when coupled with an always-open tmux session.
Peter Gervase
Mon, 2/8/2021 at 11:00pm

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Photo by Christina Morillo from Pexels

If you’re already somewhat familiar with tmux and Irssi, feel free to just refer to the basic steps in the TL;DR section below. For more details and options, check out the more in-depth configuration steps farther down the page.

Topics:  
Linux  
Command line utilities  
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A how-to guide for your first remote Red Hat certification exam

Remote work and remote training are the new paradigms. Here’s how to prepare for a remote certification exam.
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Handling secrets in your Ansible playbooks

Handling secrets in your Ansible playbooks

This article discusses how to manage secrets, such as passwords, in your Ansible playbooks. It explores the different ways that Ansible can fit into any workflow in a secure, easy to use manner.
Anthony Critelli
Mon, 2/8/2021 at 9:56pm

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Photo by Andrea Piacquadio from Pexels

It’s finally happened. You’ve gone all-in with Ansible. You’ve read all the great articles, seen the use cases, and are excited to start building repeatable infrastructure and managing your configuration as code. There’s just one problem: You have a configuration file or a task that requires a password or other piece of mission-critical information. You know that you shouldn’t store the password in your plaintext files, so you’re not quite sure where it should go.

Topics:  
Linux  
Ansible  
Read More at Enable Sysadmin