1ADDR2NAME(1) User's Manual ADDR2NAME(1)
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6 addr2name, name2addr - perform DNS lookups from scripts
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9 addr2name [-46cmnr] [HOSTNAMES]
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11 name2addr [-46cn] [HOSTNAMES]
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15 Write addresses or canonical hostname of specified names to the stan‐
16 dard output. If no names are specified via the command line, they are
17 read from the standard input.
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21 -4 or --ipv4
22 Only try to perform IPv4 lookups.
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25 -6 or --ipv6
26 Only try to perform IPv6 lookups.
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29 -c or --config
30 Only lookup and print results for address families that match
31 locally configured addresses (If the system has no IPv4 resp
32 IPv6 address, then IPv4 resp IPv6 addresses are ignored).
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35 -h or --help
36 Display some help and exit.
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39 -m or --multiple
40 Normally, if a name yields multiple results, only the first one
41 is printed. With this optional parameter, all results will be
42 printed on a single line, separated by spaces.
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45 -n or --numeric
46 Prevent forward hostname lookup. This ensures that the input
47 names are numeric addresses, which do not need to be looked up.
48 Typically used along with the --reverse option to convert numer‐
49 ical addresses to canonical hostnames.
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52 -r or --reverse
53 Perform a reverse DNS lookup (enabled implicitly with
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55 default instead.
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58 --version
59 Display program version and license and exit.
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63 host(1), getaddrinfo(3), getnameinfo(3), resolv.conf(5)
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67 Rémi Denis-Courmont <remi at remlab dot net>
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69 $Id: addr2name.1 658 2010-10-31 20:56:30Z remi $
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71 http://www.remlab.net/ndisc6/
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75addr2name $Date: 2010-10-31 22:56:30 +0200 (dim. 31 oct. 2010) $ADDR2NAME(1)