Domain name that defines the FQDN name in the DNS system
dnsdomainname command is used to define the domain name in the FQDN name in the DNS system.
dnsdomainname(option)
-v: Detailed information mode, output detailed information about command execution.
[root@AY1307311912260196fcZ ~]# dnsdomainname -v
gethostname()=`AY1307311912260196fcZ'
Resolving `AY1307311912260196fcZ' ...
Result: h_name=`AY1307311912260196fcZ'
Result: h_addr_list=`10.160.7.81'