Populates the existing hosts database with entries from a UNIX
    /etc/hosts file.
    The name and location of the hosts database is specified by the
    logical name TCPIP$HOST. If this name is not defined, the command
    looks for TCPIP$HOST.DAT in your current directory.
    Related commands: CREATE HOST, SET HOST, SHOW HOST
    Format
      CONVERT/VMS HOST  [ source_file ]
                        [ /LOG ]
                        [ /UPCASE ]
Additional Information:
explode
extract