ftp.ntua.gr:/mirror/ubuntu/dists/groovy-security/main/debian-installer/binary-amd64/by-hash/SHA256/?C=N&O=D 
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[DIR] Parent Directory                                                      -   
[   ] 787f00ba5efa17c4de11c72b9392aecff1238afbb2653..> 11-May-2021 23:27   86K  
[   ] 2737a914d03e11878341bcb1a7247c04d07dbf3710475..> 11-May-2021 23:27   70K
Apache/2.2 Server at ftp.grnet.gr Port 80