download the data via
wget https://github.com/iQuxLE/Exomiser-Tutorial/raw/main/Exomiser-Tutorial.zip
or clone the repository
git clone https://github.com/iQuxLE/Exomiser-Tutorial.git
unzip with
unzip Exomiser-Tutorial.zip
Since the VCF files for parts of the example data are a bit larger, you need to download the following seperately and put it into the Exomiser-Tutorial folder.
wget https://github.com/iQuxLE/Exomiser-Tutorial/raw/main/pfeiffer-family-vcf.zip
unzip pfeiffer-family-vcf.zip -d Exomiser-Tutorial/exomiser-config/