Tech Wiki

The “Tech Wiki” category on our website provides a comprehensive and up-to-date information on various technology related topics. This includes articles, tutorials, and guides on the latest technology trends, software, hardware, and more. Our team of experts has curated this content to provide accurate, reliable, and easy-to-understand information on technology. The “Tech Wiki” category is perfect for anyone looking to stay informed about the latest developments in the tech industry, from tech enthusiasts to professionals in the field.

Tech Wiki

How to Set Up SPF, DKIM, and DMARC for Your Domain

July 17, 2026

Configure SPF, DKIM, and DMARC DNS records correctly to authenticate outgoing email, improve deliverability, and protect your domain from spoofing.

Tech Wiki

How to Fix an External Monitor Not Detected on Windows 11 or Mac

July 16, 2026

Troubleshoot an external monitor that is not detected by checking its input, cable, display settings, graphics drivers, USB-C compatibility, and hardware limits.

Tech Wiki

How to Create and Analyze Indexes in MongoDB with explain()

July 16, 2026

Learn how to create single-field and compound MongoDB indexes, inspect query execution plans with explain(), and identify inefficient collection scans.

Tech Wiki

How to Set Up Dynamic DNS for Remote Access Without a Static IP

July 15, 2026

Set up Dynamic DNS on your router or an always-on device so you can reach your home network through a consistent hostname when your public IP address changes.

Tech Wiki

How to Fix iPhone Personal Hotspot Not Showing Up or Connecting

July 14, 2026

Is your iPhone Personal Hotspot missing, undiscoverable, or refusing connections? Use these steps to restore the hotspot, correct carrier settings, and reconnect your devices.

Tech Wiki

How to Configure AWS CLI Profiles for Multiple Accounts

July 14, 2026

Configure named AWS CLI profiles for multiple accounts, switch profiles safely, use IAM Identity Center, assume roles, and verify which AWS identity is active.

Tech Wiki

How to Send JSON Data with cURL: GET, POST, PUT, PATCH, and DELETE Examples

July 13, 2026

Learn how to send JSON data with cURL using GET, POST, PUT, PATCH, and DELETE requests, including authentication, headers, file uploads, and response troubleshooting.

Tech Wiki

How to Replace WordPress WP-Cron with a Real Cron Job

July 13, 2026

Replace WordPress WP-Cron with a reliable server-side cron job using cPanel, curl, wget, or WP-CLI. Includes configuration examples, verification steps, and troubleshooting tips.

Tech Wiki

How to Verify a SHA-256 Checksum on Windows, macOS, and Linux

July 12, 2026

Verify a downloaded file’s SHA-256 checksum using built-in commands in Windows, macOS, or Linux, then compare it safely with the publisher’s official hash.

Tech Wiki

How to Show Hidden Files on Mac in Finder and Terminal

July 12, 2026

Learn how to view hidden files and folders on a Mac using a Finder keyboard shortcut, Terminal commands, and the Go to Folder tool—and how to hide them again safely.

Tech Wiki

How to Find Which Process Is Using a Port on Windows, macOS, and Linux

July 12, 2026

Identify the process listening on a specific TCP or UDP port using PowerShell, Command Prompt, lsof, ss, and other built-in system tools.

Tech Wiki

PostgreSQL psql Commands Cheat Sheet for Beginners

July 12, 2026

A practical PostgreSQL psql commands cheat sheet covering database connections, listing tables, describing schemas, running queries, importing data, exporting results, and troubleshooting common psql mistakes.