NAME
addr2name, name2addr - perform DNS lookups from scripts
SYNOPSIS
addr2name [-46mnr] [HOSTNAMES]
name2addr [-46n] [HOSTNAMES]
DESCRIPTON
Write addresses or canonical hostname of specified names to the
standard output. If no names are specified via the command line, they
are read from the standard input.
OPTIONS
-4 or --ipv4
Only try to perform IPv4 lookups.
-6 or --ipv6
Only try to perform IPv6 lookups.
-h or --help
Display some help and exit.
-m or --multiple
Normally, if a name yields multiple results, only the first one
is printed. With this optional parameter, all results will be
printed on a single line, separated by spaces.
-n or --numeric
Prevent forward hostname lookup. This ensures that the input
names are numeric addresses, which do not need to be looked up.
Typically used along with the --reverse option to convert
numerical addresses to canonical hostnames.
-r or --reverse
Perform a reverse DNS lookup (enabled implicitly with
addr2name). addr2name prints numerical resolved addresses by
default instead.
--version
Display program version and license and exit.
SEE ALSO
host(1), getaddrinfo(3), getnameinfo(3), resolv.conf(5)
AUTHOR
Rémi Denis-Courmont <rdenis at simphalempin.com>
$Id: addr2name.1 483 2007-08-08 15:09:36Z remi $
http://www.remlab.net/ndisc6/