ftp.ntua.gr:/ubuntu/dists/groovy-updates/universe/debian-installer/binary-amd64/by-hash/SHA256/?C=D&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] b9163eedfe9905cde2096e04ec40934200f55d158f2d0..> 06-May-2021 11:46  9.4K  
[   ] c28a9ed8989ef6a802309aa64370f8ef13e9d0d61fcd2..> 06-May-2021 11:46   10K
Apache/2.2 Server at ftp.ntua.gr Port 80