You need curl installed.
sudo apt install curl (Debian/Ubuntu)
sudo yum install curl (Red Hat)

To make it system wide
======================
nano /etc/profile

add the following line to the file

curl https://magical.ddns.net/Tux-Logo.apg

Apply to a specific user
========================
nano .profile

add the following line to the file

curl https://magical.ddns.net/Tux-Logo.apg

The following files are available

AU.apg
Canada.apg
UK.apg
USA.apg