ftp.ntua.gr:/mirror/ubuntu/dists/focal-updates/main/signed/linux-oracle-amd64/current/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] signed.tar.gz                                    12-May-2021 12:20   20M  
[   ] SHA256SUMS.gpg                                   12-May-2021 12:20  1.5K  
[   ] SHA256SUMS                                       12-May-2021 12:20   80
Apache/2.2 Server at ftp.grnet.gr Port 80