curl -o thisfile.txt $(echo 'https://'$(openssl rand -base64 24 | tr -dc 'a-zA-Z0-9')'.github.io')

Download the file named "thisfile.txt" from a randomly generated GitHub page.
`curl -o thisfile.txt $(echo 'https://'$(openssl rand -base64 24 | tr -dc 'a-zA-Z0-9')'.github.io')`