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Motherboard Form Factor
Chiu Yau
Tabular information[edit] Form factor Originated Date Max. size[info 1]width × depth Notes(typical usage, Market adoption, etc.) XT IBM 1983 216 × 279 mm(8.5 × 11 in) Obsolete, see Industry Standard Architecture. The IBM Personal Computer XT was the successor to the original IBM PC, its first home computer. As the specifications were open, many clone motherboards were produced and it became a de facto standard. AT (Advanced Technology) IBM 1984…
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Quick Tip: How to Permanently Change SQL Mode in MySQL
Chiu Yau
Disclaimer: This is a copy of Quick Tip: How to Permanently Change SQL Mode in MySQL – SitePoint was working on a legacy project recently and needed to import some data from MySQL 5.5. All the queries in the code worked perfectly in MySQL 5.5, so I assumed an upgrade to 5.7 would be seamless.…
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How to install Coturn (TURN / STUN Server) in Ubuntu 22.04 via PPA | UbuntuHandbook
Disclaimer: This is a copy of How to install Coturn (TURN / STUN Server) in Ubuntu 22.04 via PPA | UbuntuHandbook Ubuntu 22.04 misses coturn TURN and STUN server package in its system repository. Here’s how to install it via PPA. Coturn is a free open source implementation of TURN and STUN Server, which can…
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Cloudflare Allowed Ports with Proxy Enabled
Disclaimer: This is an copy of Network ports · Cloudflare Fundamentals docs Network ports Learn which network ports Cloudflare proxies by default and how to enable Cloudflare’s proxy for additional ports. Network ports compatible with Cloudflare’s proxy By default, Cloudflare proxies traffic destined for the HTTP/HTTPS ports listed below.HTTP ports supported by Cloudflare 80 8080…
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OC\HintException: Memcache \OC\Memcache\APCu not available
Chiu Yau
The line apc.enable_cli=1 should be added into php.ini if APCu is enabled. However, this line should be added into /etc/php/<php-version>/cli/php.ini instead of /etc/php/<php-version>/<apache/apache2>/php.ini
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How to run crontab as user:www-data?
Chiu Yau
Edit crontab with the -u argument to edit a crontab for a specific user: Or, write your entry into the system crontab /etc/crontab, which takes an additional argument specifying the user to run as (usually root, but can be www-data).
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How To Run Multiple PHP Versions on One Server Using Apache and PHP-FPM on Ubuntu 22.04
Chiu Yau
Introduction The Apache web server uses virtual hosts to manage multiple domains on a single instance. Similarly, PHP-FPM uses a daemon to manage multiple PHP versions on a single instance. Together, you can use Apache and PHP-FPM to host multiple PHP web-applications, each using a different version of PHP, all on the same server, and all at the same…
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How To Create Temporary and Permanent Redirects with Apache and Nginx
Chiu Yau
Introduction HTTP redirection, or URL redirection, is a technique of pointing one domain or address to another. There are many uses for redirection, and a few different kinds of redirection to consider. Redirects are used whenever a site needs people requesting one address to be directed to another address. As you create content and administrate…
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How To Create a Self-Signed SSL Certificate for Apache in Ubuntu 22.04
Chiu Yau
Introduction TLS, or “transport layer security” — and its predecessor SSL — are protocols used to wrap normal traffic in a protected, encrypted wrapper. Using this technology, servers can safely send information to their clients without their messages being intercepted or read by an outside party. In this guide, we will show you how to create and…
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Enabling Perfect Forward Secrecy
Chiu Yau
Enabling Perfect Forward Secrecy To encrypt communications between you and your end users, you purchase a SSL Certificate, install it on your server, and then configure your website to use the certificate to protect these communications. The SSL connection begins when the end user’s browser reaches out to shake hands with your website. During this…
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