HTML forms are used to submit user input to a web service endpoint or other destination for further processing. HTML forms surround certain elements (outlined in the next lesson) and…
Lesson 12 – HTML forms
External hard drive format for Windows and Mac
A common problem encountered is the ability to read and write to a hard drive on both Windows and Mac operating systems. External hard drive on used on Windows machines…
Guide: SFTP access to chrooted directory Ubuntu
In case you're wondering what the difference is between SFTP and FTPS: SFTP is FTP over SSH and FTPS is FTP with SSL. Step 1 – Setup chroot in SSH config…
Install Unifi controller on Ubuntu
Installing Ubiquiti's Unifi controller on Ubuntu is fairly straight forward. The first step is to install the Unifi controller with the following commands: deb http://www.ubnt.com/downloads/unifi/debian stable ubiquiti sudo apt-key adv…
Solve invalid HTTPS certificate by referencing local files
We recently came across something quite interesting – if your website is HTTPS and you reference an image or any other files from a non HTTPS website, this will result…
How to Download Liquid Rescale for Ubuntu
The plugin is included in Debian and in Ubuntu, in the package “gimp-plugin-registry”, which also includes some other great plugins. To get started, open your terminal with: Ctrl+Alt+T Then run…
Find and set $JAVA_HOME Ubuntu
To find $JAVA_HOME on Ubuntu run: echo $JAVA_HOME If this yields nothing, you can set it with: export JAVA_HOME=/usr/lib/jvm/java-8-oracle Please note that your version of java might differ from java-8-oracle….
Add Let's encrypt certificate to Java keystore
Let’s encrypt places certificates in the following directory: /etc/letsencrypt/live/YOUR-DOMAIN-NAME/ The first thing you’ll have to do is convert your certificate to .der format openssl x509 -outform der -in cert.pem -out…
Force website to be served with HTTPS
Create a .htaccess in the web directory of your website with the following content: RewriteEngine On RewriteCond %{SERVER_PORT} 80 RewriteRule ^(.*)$ https://base64.co.za/$1 [R,L]
Enable Google Analytics in WordPress
There are a couple of plugins which help you to do this, but we’ve found the simplest way is to add the Google Analytics code to the header.php file just…









