gethostbyaddr
gethostbyaddr address, [addrtype]
Retrieves the hostname (and alternate addresses) of
a packed binary network address. (addrtype indicates the
type of address given. Since gethostbyaddr is used almost
solely for Internet IP addresses, addrtype is not needed.)
The return value in list context is:
where($name, $aliases, $addrtype, $length, @addrs)
@addrs
is a list of packed binary addresses. In the Internet domain, each address is
four bytes long and can be unpacked by saying something like:
($a, $b, $c, $d) = unpack('C4', $addrs[0]);gethostbyaddr returns only the
hostname. |  |  |
| Reference: getgrnam |  | Reference: gethostbyname |