A Technical I.T./DevOps Blog
January 23rd, 2024 is a day that will live in infamy. 26 billion records were stolen. To learn more, see these external websites:
https://cybernews.com/security/billions-passwords-credentials-leaked-mother-of-all-breaches/
https://mashable.com/article/mother-of-all-breaches-leak-26-billion-cybersecurity
https://www.techopedia.com/mother-of-all-breaches-everything-you-need-to-know
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Continue reading “MOAB: The Mother of All Breaches Happened on January 23rd 2024”
Image via Freepik
In today’s dynamic business environment, small business owners are often tasked with a myriad of responsibilities, juggling various roles to ensure the wheels keep turning. Balancing every aspect of business management can be overwhelming, and there’s an undeniable advantage in delegating specialized tasks to experts.
Doing so not only improves efficiency but also allows you to focus on the core aspects of your business. The following article from bizhelpportal.com explains which tech-related tasks are prime candidates for outsourcing.
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Continue reading “Streamlining Success: Tech-Related Outsourcing Tips for Small Business Owners”
Problem scenario
You are not sure if an email address is associated with spam. Someone make comments on your blog. You are not sure if they are legitimate comments or if it is someone trying to spam a website or create a message that is an advertisement. What should you do to check-in on the email address?
Solution
Try https://cleantalk.org/blacklists/
On cleantalk.org you can search for IP addresses,
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Problem scenario
You have a file that is too big to fit into memory. How can Python read the file?
Possible Solution #1
You can use the “open” method and the “read()” or “readlines()” methods. Avoid using read() because that will read the entire file into memory. The readline() and readlines() methods can be given a byte number as an argument.
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Continue reading “How Do You Write a Python Program to Process a Large File?”
Problem Scenario
You run an HDFS command, but you get this message: “ERROR: Hadoop common not found”
What should you do?
Solution
As the hduser or user that runs hdfs, log in. Run echo $HADOOP_HOME
That directory should have a libexec directory with a file called hadoop-config.sh.
Run this: ls -lh $HADOOP_HOME/libexec
One way to create it is this: 1) find a hadoop-config.sh file (e.g.,
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Continue reading “How Do You Troubleshoot “ERROR: Hadoop common not found” when Running Hadoop?”
Problem scenario
You find a showerhead with black build-up or gunk. You want the spouts to be clean. It may look like this:
You want to remove the black flecks from inside. What should you do to clean the inside of the showerhead?
Solution
1. Get a dishwashing brush, a bottle brush, or a toothbrush with long bristles.
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Continue reading “How Do You Clean the Inside of a Showerhead?”
Problem scenario
You know how to find the individual postings. You know how to find the main pages in WordPress. But how do you find your advertisers and sidebars on your site (to edit them)?
Solution
In WordPress, go to Appearance -Themes. Choose the theme that applies to your site. On the main part of the screen, click/browse to the area of your site that has the blocks,
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Continue reading “How Do You Find the Static Blocks or Columns in WordPress?”
Question
Variables in Java store data (e.g., a string or number). How is instantiation of a variable different from initialization, or are they the same?
Answer
Instantiation is different from initialization. Instantiation is the creation of the variable (e.g., through the Java syntax or invocation of a method that creates the variable). A class can be instantiated or a primitive variable can be instantiated.
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Continue reading “How Is Instantiation Different from Initialization of a Java Variable?”
Problem scenario
You must record an audible greeting for a voicemail. You do not want to use your voice. What should you do?
Solution
1. Go to this website: https://wideo.co/text-to-speech/.
2. Enter this text (but substitute 212-123-4567 with your phone number:
Hello, you have reached 2,1,2,1,2,3,4,5,6,7. No one is available to take your call,
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Continue reading “How Do You Record a Greeting on a Phone That Gives You Privacy?”