ftp.ntua.gr:/ubuntu/dists/focal/main/uefi/grub-efi-amd64-amd64/current/?C=S&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] control/                                         18-Oct-2019 14:04    -   
[   ] version                                          18-Oct-2019 14:04   14   
[   ] SHA256SUMS                                       18-Oct-2019 14:04  320   
[   ] SHA256SUMS.gpg                                   18-Oct-2019 14:04  1.5K  
[   ] grubx64.efi                                      18-Oct-2019 14:04  783K  
[   ] grubx64.efi.signed                               18-Oct-2019 14:04  785K
Apache/2.2 Server at ftp.ntua.gr Port 80