Kent West wrote:
[When] I try to do a "sudo", even something simple like "sudo ls", I get:sudo: unable to lookup westk03 via gethostbyname()(westk03 is the name of this computer), and once I got something like "hostname does not exist", even though the command "hostname" reports "westk03" and that's what's in /etc/hostname.
Somehow my /etc/hosts file disappeared. I created a new one, making sure my first line was:
127.0.0.1 localhost westk03 and now all is well. -- Kent