ftp.ntua.gr:/ubuntu/dists/groovy-updates/main/uefi/grub2-amd64/2.04-1ubuntu44/?C=M&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] SHA256SUMS                                       12-Apr-2021 19:28  650   
[   ] SHA256SUMS.gpg                                   12-Apr-2021 19:28  819   
[DIR] control/                                         12-Apr-2021 19:28    -   
[   ] gcdx64.efi                                       12-Apr-2021 19:28  1.4M  
[   ] gcdx64.efi.signed                                12-Apr-2021 19:28  1.4M  
[   ] grubnetx64.efi                                   12-Apr-2021 19:28  1.4M  
[   ] grubnetx64.efi.signed                            12-Apr-2021 19:28  1.4M  
[   ] grubx64.efi                                      12-Apr-2021 19:28  1.6M  
[   ] grubx64.efi.signed                               12-Apr-2021 19:28  1.6M  
[   ] version                                          12-Apr-2021 19:28   15
Apache/2.2 Server at ftp.ntua.gr Port 80