General

A neat little utility to remove the password from a PDF is qpdf. To get started install qpdf sudo apt-get install qpdf Remove the password using the following command qpdf –password=YOUR-PASSWORD-HERE…

Passwordless login via SSH is especially useful in automated backup scripts. In this tutorial Host A refers to the computer from which (source) you want to login, and Host B refers…

It is very useful to be able to store the output of a command to a shell variable for use in a script. This can be achieved as follows: shellVariableName=$(COMMAND)…

It is quite useful to view the contents of a zip, tar.gz or tar.bz2 file without extracting the file from the terminal. View contents of a zip file unzip -l…

There are very many HTML layouts which can be used, but there are a couple of common elements which assist in defining the structure of an HTML page: <header> <nav>…

I've recently been playing around with the Ghost blogging platform and wanted to see how well the docker image worked. The default theme (Casper) looks great and certainly takes simplicity…

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…

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…

The Advanced Audio Distribution Profile, or A2DP, is a subset of profiles with which a device must be compatible with in order to use Bluetooth ® technology. This technology enables…

HTML stands for Hyper Text Markup Language and is comprised of tags which are structured as follows: content goes here… Every HTML page has the following standard tags: html head…