I am having trouble with my Debian Linux network configuration, and I
am trying to isolate the problem. The name of my host is "jupiter"
and the name of my domain is "obliqueuniverse.org".

jupiter:~# echo jupiter.obliqueuniverse.org > /etc/hostname

jupiter:~# cat /etc/hosts | sed –n 1p
127.0.0.1 localhost.localdomain localhost jupiter

jupiter:~# cat /etc/hosts | sed –n 4p
207.237.37.110 jupiter.obliqueuniverse.org jupiter

I believe that /bin/hostname without options should output the host
name "jupiter", but it doesn't. Here's what I get when I run /bin/
hostname:

jupiter:~# /bin/hostname -–domain
obliqueuniverse.org # AS EXPECTED

jupiter:~# hostname –-fqdn
jupiter.obliqueuniverse.org # # AS EXPECTED

jupiter:~# /bin/hostname –-ip-address
207.237.37.110 # AS EXPECTED

jupiter:~# /bin/hostname –short
jupiter # AS EXPECTED

jupiter:~# /bin/hostname –nis
(none) # ? ? ?

jupiter:~# /bin/hostname
jupiter.obliqueuniverse.org # EXPECTED "jupiter"

jupiter:~# /bin/hostname –F /etc/hostname
# EXPECTED "jupiter"

jupiter:~# /bin/hostname –-alias
jupiter # NOW HOSTNAME IS PRINTED!

Can anyone shed light on the last 4 results?

Thanks & Best Regards,

Vwaju
New York City