This is the command fdnscname that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
fdnscname - resolve the canonical name of a host
fdnsname will attempt to look up the canonical name of hostname. If one is found, it is
printed to standard output and the program exits with return code 0. If not, nothing is
printed and the program exits with return code 1.
Use fdnscname online using onworks.net services