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Under GNU General Public License
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ADDR2NAME(1) User's Manual ADDR2NAME(1)
NAME
addr2name, name2addr - perform DNS lookups from scripts
SYNOPSIS
addr2name [-46cmnr] [HOSTNAMES]
name2addr [-46cn] [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.
-c or --config
Only lookup and print results for address families that match locally configured
addresses (If the system has no IPv4 resp IPv6 address, then IPv4 resp IPv6 ad-
dresses are ignored).
-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 ad-
dresses, 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
Remi Denis-Courmont <remi at remlab dot net>
http://www.remlab.net/ndisc6/
addr2name $Date$ ADDR2NAME(1)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2025-11-19 04:33 @216.73.216.116 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)