In this section we learnt:
- That this book is for IT professionals, hobbyists or anyone who wants to learn more about how to work with computers
- What the shell is, and why we might want to use it
- How to open the shell programs for Windows, Mac and Linux which are installed by default
- How to configure the shells for Windows or Mac to behave in a Linux-like way to allow us to follow on with the rest of the book
We introduced the following commands:
cd- which changes directory
pwd- which prints the current working directory
ls- which lists the contents of a directory
echo- which writes text to the screen
open- which will open a file or folder
We also briefly introduced variables, which are special values which start with the dollar symbol, such as
$HOME which stores the user's home directory. We saw that each directory contains two special directories -
.. which represents the parent directory, and
. which represents the current directory.
With these tasks complete we can now move onto the next section.