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       addr2name, name2addr - perform DNS lookups from scripts


       addr2name [-46mnr] [HOSTNAMES]

       name2addr [-46n] [HOSTNAMES]


       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.


       -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.

              Display program version and license and exit.


       host(1), getaddrinfo(3), getnameinfo(3), resolv.conf(5)


       RĂ©mi Denis-Courmont <rdenis at>

       $Id: addr2name.1 483 2007-08-08 15:09:36Z remi $