Digikam is great for organizing pictures, yet above 20,000 pictures it can begin to slow down. You can speed it back up with MySQL, and set some options to make it even faster.

Most every cpu made since 1995 is vulnerable to a set of vulnerabilities that could compromise secret data on computers, servers, and containers.

OpenSSH 7.2p2 and before had a vulnerability where it would use Blowfish for users that don’t exist, and SHA256/SHA512 for real users. Here’s how to test for it. (Note that i)

Do you use Cloudflare with Github Pages? Are you using Jekyll, Hugo, or another static generator, and want to clear those cached pages without logging into Cloudflare. Here’s how!

Wanting to take DMARC, DKIM, and SPF to the next level? Have you setup a method to collect reports and view them? If not, this article shows a way how to do it.

Here is a simple way to auto renew all your certificates with Certbot, get email notifications about it, and safely restart NGINX, Apache, and any other service you need to restart to get the certificates.

Do you have extra characters like 0~ and 1~ showing up when you paste into ssh terminal? Here’s a simple way to fix that.

An easy way to clear out a Mysql database of all of its tables.

Want a high availability MySQL Cluster were you can access all the database nodes at the same time? As in Primary-Primary-Primary-etc setups? Then this is the one for you.

To use Thunderbird with your Gmail account, Google tells you to allow “Insecure apps”. However, Thunderbird supports Oauth2 with Gmail. Here’s how to set it up.