bin/dnsdomainname
bin/domainname
bin/hostname
bin/nisdomainname
bin/ypdomainname
#usr/share/man/man1/dnsdomainname.1
#usr/share/man/man1/domainname.1
#usr/share/man/man1/hostname.1
#usr/share/man/man1/nisdomainname.1
#usr/share/man/man1/ypdomainname.1