The example programs DNS!

 It zcat is not avilable on your system, seporate incompress and tar command. 😏😮

The example programs in this www.corona2021max.blogspot.com are available electronically via FTP.

In ether case, comma extract the files from the archiv by tupping you:

💀 Skill ;)

% zcat dns.tar.Z | tar xf -

System V system reguirthe following tar command instead.

💚 

P.S. ...