ftp.ntua.gr:/ubuntu/dists/bionic-backports/main/binary-amd64/by-hash/SHA256/?C=M&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 8ac0e3059d5a066160c32a07bc46d6e3027edc3fc3015..> 25-Oct-2017 02:16  106   
[   ] 0e41541c7b41678f538b9b794d521306d70572a327894..> 30-Sep-2020 03:24   11K  
[   ] c7768900808ca1b135b2f9c9148771fb82f78770e1ad9..> 30-Sep-2020 03:24  9.8K
Apache/2.2 Server at ftp.ntua.gr Port 80