ftp.ntua.gr:/ubuntu/dists/bionic-updates/main/uefi/grub2-amd64/current/?C=M&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] version                                          08-May-2021 00:48   15   
[   ] grubx64.efi.signed                               08-May-2021 00:48  1.6M  
[   ] grubx64.efi                                      08-May-2021 00:48  1.6M  
[   ] grubnetx64.efi.signed                            08-May-2021 00:48  1.4M  
[   ] grubnetx64.efi                                   08-May-2021 00:48  1.4M  
[   ] gcdx64.efi.signed                                08-May-2021 00:48  1.4M  
[   ] gcdx64.efi                                       08-May-2021 00:48  1.4M  
[DIR] control/                                         08-May-2021 00:48    -   
[   ] SHA256SUMS.gpg                                   08-May-2021 00:48  819   
[   ] SHA256SUMS                                       08-May-2021 00:48  650
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