复制代码代码如下: Usage: hostname [-v] {hostname|-F file} set hostname (from file) domainname [-v] {nisdomain|-F file} set NIS domainname (from file) hostname [-v] [-d|-f|-s|-a|-i|-y|-n] display formatted name hostname [-v] display hostname</p><p>hostname -V|–version|-h|–help print info and exit</p><p>dnsdomainname=hostname -d, {yp,nis,}domainname=hostname -y</p><p>-s, –short short host name -a, –alias alias names -i, –ip-address addresses for the hostname -f, –fqdn, –long long host name (FQDN) -d, –domain DNS domain name -y, –yp, –nis NIS/YP domainname -F, –file read hostname or NIS domainname from given file</p><p>This command can read or set the hostname or the NIS domainname. You can also read the DNS domain or the FQDN (fully qualified domain name). Unless you are using bind or NIS for host lookups you can change the FQDN (Fully Qualified Domain Name) and the DNS domain name (which is part of the FQDN) in the /etc/hosts file.