Author: Jagdish Kumawat

I am a chatbot consultant and developer with a passion for building conversational AI solutions that can help businesses enhance customer engagement, improve efficiency, and increase ROI. I founded Dewiride Technologies, a conversational AI consultancy that specializes in building chatbots and SaaS solutions for businesses. With years of experience in the field, I have honed my skills in building chatbots using popular platforms such as Microsoft Bot Framework, Dialogflow, RASA, Power Virtual Agents, and Amazon LEX. In addition to chatbots, I also specialize in developing custom SaaS solutions that are designed to streamline business operations and enhance productivity. My core expertise lies in building Microsoft Teams apps and bots. I understand the importance of collaboration and communication in today's fast-paced business world, and I work tirelessly to create chatbots and apps that can help teams work more effectively and efficiently. I am committed to staying up-to-date with the latest trends and technologies in the industry. I understand that the world of AI is constantly evolving, and I am always looking for ways to improve my skills and knowledge. Whether you need a simple chatbot for customer service or a more complex AI-powered virtual assistant, I have the expertise to deliver high-quality solutions that can help take your business to the next level. If you have any questions or would like to learn more about how I can help your business, please don't hesitate to get in touch.

How to Create an Ubuntu VM on a Mac with Multipass

The Multipass Configure instance window with the name pg-server, 2 CPUs, 2 GiB of memory, 20 GiB of disk and the Launch button.

Run Ubuntu Server 26.04 LTS on your Mac for free with the Multipass app: install it, pick Ubuntu Server, set its size and click Launch. No Terminal needed.

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Fixed: brew services cleanup Says “All user-space services OK, nothing cleaned…” but Old Services Stay

Terminal output of brew services cleanup saying All user-space services OK, nothing cleaned, followed by an rm command for the cached PostgreSQL bottle manifests.

brew services cleanup reported nothing cleaned while two old PostgreSQL launch agents were still loaded. Here is why Homebrew skips them, and how launchctl bootout fixes it.

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Fixed: “Operation not permitted” When Deleting /Library/PostgreSQL with sudo rm on macOS

Terminal output of sudo rm -rf /Library/PostgreSQL showing Operation not permitted for folders such as Preferences, Mail and Containers inside /Library/PostgreSQL/17/Library.

sudo rm -rf /Library/PostgreSQL failed with Operation not permitted on macOS. The cause was privacy protection, not file permissions, and the fix is to give Terminal Full Disk Access for a moment.

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How to Completely Uninstall PostgreSQL from macOS (EDB Installer)

The PostgreSQL uninstaller window titled Uninstallation mode, with Entire application selected instead of Individual components.

The PostgreSQL uninstaller leaves your databases, a hidden postgres user and pgAdmin settings behind. These six short steps remove all of it from macOS.

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Is PostgreSQL Free for Commercial Use? The PostgreSQL License Explained

The License page on postgresql.org, showing the PostgreSQL License text with its copyright notices, the permission paragraph and two disclaimer paragraphs, plus a note that there are no plans to change the license.

Yes, PostgreSQL is free for commercial use. Here's what the PostgreSQL License allows, the one condition it sets, and what it doesn't cover, in plain words.

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PostgreSQL Tutorial — Part 1: What Is PostgreSQL? Databases, Tables and SQL Explained

The top of the postgresql.org home page, with the heading PostgreSQL: The World’s Most Advanced Open Source Relational Database and the buttons Download and New to PostgreSQL.

What is PostgreSQL? Part 1 of the PostgreSQL Tutorial explains databases, tables, rows, columns, keys and SQL in plain words, and how PostgreSQL works. No installs yet.

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Fixed: “export: not valid in this context” in zsh

zsh printing export: not valid in this context, and bash printing export: not a valid identifier, for a variable name with dots.

not valid in this context is zsh refusing a variable name with a dot in it. ASP.NET Core log categories are full of dots, so to turn one down through an environment variable, export won't do. env will.

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Fixed: “zsh: no matches found” for a URL with a ? or a --include=*.cs Option

Two commands in zsh, each failing with zsh: no matches found, one naming --include=*.cs and one naming a URL with a question mark.

curl http://localhost:5190/demo/enum?status=placed and grep -rn 'class' src --include=*.cs both failed with zsh: no matches found, and neither program ever ran. Commands like these work in bash, and they appear that way in a lot of tutorials. In zsh, you have to quote them.

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Fixed: “zsh: ===== not found” When a Word Starts with = in zsh

A zsh terminal where echo ====== prints zsh: ===== not found, and [ "$a" == 1 ] && echo same prints zsh: = not found.

I printed a line of equals signs in zsh, the default shell on macOS, and got zsh: ===== not found instead. The same thing happens to [ "$a" == 1 ], as zsh: = not found. zsh reads a word that starts with = as the name of a command; quote the word, and the line prints.

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Fixed: Adaptive Cards Designer Changes the Card Version to 1.6

The Card payload editor of the Adaptive Cards Designer showing version 1.6 again after a TextBlock was added to the card.

The Adaptive Cards Designer always writes version 1.6 into the JSON it copies and exports, even after you type 1.5. Teams and Copilot Chat support 1.5, so change the version in your copy.

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