hostname: hostname (Linux hostname utility) hostname: hostname: The hostname utility is used to set or read the system hostname, hostname: domainname, dnsdomainname, nisdomainname, or ypdomainname. hostname: This package is required unless you want all of these set to (null), hostname: which you don't. hostname: hostname: The hostname utility was written by Peter Tobias, Bernd Eckenfels, hostname: and Michael Meskes. hostname: hostname: