ftp.ntua.gr:/mirror/ubuntu/dists/groovy/main/uefi/grub2-amd64/2.04-1ubuntu30/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] grubx64.efi.signed                               04-Sep-2020 12:03  1.6M  
[   ] grubx64.efi                                      04-Sep-2020 12:03  1.6M  
[   ] grubnetx64.efi.signed                            04-Sep-2020 12:03  1.4M  
[   ] grubnetx64.efi                                   04-Sep-2020 12:03  1.4M  
[   ] gcdx64.efi.signed                                04-Sep-2020 12:03  1.4M  
[   ] gcdx64.efi                                       04-Sep-2020 12:03  1.4M  
[   ] SHA256SUMS.gpg                                   04-Sep-2020 12:03  819   
[   ] SHA256SUMS                                       04-Sep-2020 12:03  650   
[   ] version                                          04-Sep-2020 12:03   15   
[DIR] control/                                         04-Sep-2020 12:03    -
Apache/2.2 Server at ftp.ntua.gr Port 80