ftp.ntua.gr:/mirror/ubuntu/dists/impish/main/uefi/grub-efi-amd64-amd64/current/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] version                                          23-Apr-2021 14:34   14   
[   ] grubx64.efi.signed                               23-Apr-2021 14:34  785K  
[   ] grubx64.efi                                      23-Apr-2021 14:34  783K  
[DIR] control/                                         23-Apr-2021 14:34    -   
[   ] SHA256SUMS.gpg                                   23-Apr-2021 14:34  819   
[   ] SHA256SUMS                                       23-Apr-2021 14:34  320
Apache/2.2 Server at ftp.ntua.gr Port 80