How to do it...

Let's install the Swift toolchain and run our first Swift code on Linux:

1. We need to install some dependencies related to the compiler. If you are using Ubuntu with a Graphical User Interface (GUI), open up a Terminal window and run the following from the prompt to update the software repositories:

sudo apt-get update

2. Run the next command to install a number of dependencies required for the Swift toolchain:

sudo apt-get install \
             binutils \
             git \
             gnupg2 \
             libc6-dev \
             libcurl4 \
             libedit2 \
             libgcc-9-dev \
             libpython2.7 \
             libsqlite3-0 \
             libstdc++-9-dev \
             libxml2 \
             libz3-dev \
             pkg-config \
             tzdata \
             zlib1g-dev

The Swift team released a prebuilt toolchain for Ubuntu, so we will need to download the latest released version and the associated signature file. Links for these releases can be found...