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Removing Perfctl From My Linux Server

If you’ve been around a while, you’d remember there was a time when you can rest quietly assured that your Linux box is safe from viruses and other malware. Or rather, few bad actors bother to target Linux. Most target Windows. That was then. But today, with the increase in the popularity of Linux not just on servers but even on desktops, Linux is no longer under the radar of bad actors.

So a few days ago, I was alerted to abnormal CPU utilization on one of my servers. I logged in to check and saw that there’s a process called perfctl that was using up CPU time. I killed it but it respawned after a while. It looked like my Linux server had malware.

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The Remarkable Life of Ibelin

The Remarkable Life of Ibelin tells the story of Mats Steen, a young man who spent most of his childhood and life in a wheelchair due to Duchenne Muscular Dystrophy, but found freedom in the virtual world to do what he couldn’t in the physical one. His unique circumstances highlighted an aspect of life that many still fail to grasp. Many parents scoff at or even sneer at computer games and online social interactions. But whether we like it or not, the digital aspect of our lives is real and profoundly influential. It brings people together, bridging distance and even time. In Mat’s case, it even transcended the limits of physics. As parents, we need to accept it and take it seriously. To quote Mats’ father, Robert: “We should have more respect for it and more understanding. And when we have more respect and understanding, we can also reassume the role of parents in the digital lives of our children.”

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FonePrint

FonePrint is live! It’s a small project/MVP experiment that I am working on. The idea is if you’re traveling and/or have no access to a printer, you simply upload your document and then FonePrint will print and ship your document to you or your selected recipient.

This is part of my generative AI experimentation so a lot of the content (and code!) is AI-generated. I used Vercel V0 for generating the initial UI, and Claude 3.5 Sonnet for the initial code. I then integrated and finished up using Cursor. Impressive how far AI has gone.

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How to Pass the Scrum.Org Professional Scrum Product Owner Certification Exam In One Week

Okay, that’s a bit of a click bait. It’s only realistically possible if you have already been doing Agile and Scrum and acting as Product Owner for a reasonable time. The good news is that if you’re taking this certification, you probably already have.

With that out of the way here’s what I did to prepare for (and pass) the certification exam. Depending on how much time you have available, this should take a total of about a week or two:

  1. If it’s been a while, it will be beneficial to first go through and review Scrum.org’s Scrum Master Learning Path. You don’t need to have a PSM certification but you need to have the required knowledge. And of course, a good way to validate that knowledge is getting the certification.
  2. Go through and review Scrum.org’s Product Owner Learning Path resources. For PSPO I, you need to focus on the Understanding and Applying Scrum, Developing People and Teams, and Managing Products With Agility  sections.
  3. Take Scrum.org’s Product Owner Open assessment. I did this at the end of every day. Take note that the Product Owner Open is a smaller subset of the topics and questions. It does not completely represent the certification exam. However, it is an adequate simulation of the exam experience. Once I consistently got 100% in the Product Owner Open, I decided I was ready.

The next step is purchasing the assessment voucher and then taking the exam.

As a final note, I found the exam tougher than the PSM I exam and I barely had enough time to review my answers. But with proper preparation, you should be able to do it. Good luck!