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Linux, Server & WordPress Guides for Real Tasks
Find the right Linux, server, or WordPress guide for setup, maintenance, and troubleshooting. Compare managed hosting with a self-managed VPS.
Linux Tutorials: Start Learning or Find a Task
New to Linux? Choose WSL 2, a VM, or an existing Linux system, try a checkable terminal exercise, and identify topics for files, Bash, permissions, and SSH.
How DNS Queries Work — and How to Run One Yourself
A DNS query is more than a name-to-address lookup. Learn how the message is structured, how recursive and iterative resolution actually differ, and how to run and read queries with dig, nslookup, and Resolve-DnsName — including why resolvers can legitimately disagree without any propagation delay at all.
CNAME Records for Subdomains: How They Work and What Breaks If You Don’t Follow the Rules
A technical guide to using CNAME records for subdomains: the two DNS rules that govern them, why wildcard CNAMEs don
CAA Records: Setup, Errors, and the 2027 ACME Requirement
A CAA record guide covering tag syntax, subdomain inheritance, five common failure causes, and the ACME account-binding rule CAs must support from March 2027.
Boot Camp keyboard mappings for Windows – above and beyond
Apple hardware is great…especially in the computers department (be it a MacBook, MackBookPro, Mac Mini, or simply Mac), however when it comes to the operating system, a lot of users tend to switch…
Delete a Github forked repository
Navigate to the repository you want to delete. In the repository action bar, click Settings. Under Danger Zone, click Delete this repository. Read the warnings. To verify that you’re deleting the correct…
How to send a message to a Telegram channel using the HTTP bot sendMessage API
Here’s a practical example how to send a message to a Telegram channel using a Telegram Bot and the HTTP bot sendMessage API. In order to be able to do so, you…
Nginx Error – 413 Request Entity Too Large Fix
If you’re getting 413 Request Entity Too Large errors trying to upload files to your webserver, you need to increase the client body size limit in your nginx.conf configuration file. Add ‘client_max_body_size…
WordPress theme upload error “PCLZIP_ERR_BAD_FORMAT (-10)”
While trying to install a wordpress theme that was packaged as an .rar archive I got the following error: The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End…