ftp.ntua.gr:/ubuntu/dists/xenial-updates/main/uefi/grub2-amd64/current/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] SHA256SUMS                                       30-Apr-2021 01:18  650   
[   ] SHA256SUMS.gpg                                   30-Apr-2021 01:18  916   
[DIR] control/                                         30-Apr-2021 01:18    -   
[   ] gcdx64.efi                                       30-Apr-2021 01:18  1.4M  
[   ] gcdx64.efi.signed                                30-Apr-2021 01:18  1.4M  
[   ] grubnetx64.efi                                   30-Apr-2021 01:18  1.4M  
[   ] grubnetx64.efi.signed                            30-Apr-2021 01:18  1.4M  
[   ] grubx64.efi                                      30-Apr-2021 01:18  1.6M  
[   ] grubx64.efi.signed                               30-Apr-2021 01:18  1.6M  
[   ] version                                          30-Apr-2021 01:18   15
Apache/2.2 Server at ftp.ntua.gr Port 80