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dns-ng
Langue: en
Version: dnsutl (mandriva - 01/05/08)
Section: 1 (Commandes utilisateur)
NAME
dns-ng - generate /etc/netgroup entries from DNS tablesSYNOPSIS
dns-ng [ option... ][ infile [ outfile ]]dns-ng -Help
dns-ng -VERSion
DESCRIPTION
The dns-ng program is used to generate a netgroup file from DNS information.Each host is given a netgroup. Higher-level netgroups can be created from patterns applied to the HINFO field.
OPTIONS
The following options are understood:- -Help
Provide some help with using the dns-ng program.- -VERSion
Print the version of the dns-ng program being executed.- -Group name pattern
In addition to one netgroup for each host, a netgroup of the given name will be created for all hosts with a second HINFO field matching the given pattern. This option may be specified more than once. The first pattern match found is used, machines are not placed in more than one of these groups. Patterns are regular expressions.- -Delete_Foreign_Names
- This option may be used to delete A and NS records which reference names in domains outside the domain specified in the closest preceeding SOA record.
- -Idirectory
This option may be used to set the search path for include files.
All other options will produce a diagnostic error. Options may be abbreviated, the minimum abbreviation is shown in upper-case. Options are case insensitive. Options and file names may be mixed arbitrarily on the command line.
EXIT STATUS
The dns-ng command will exit with a status of 1 on any error. The dns-ng command will only exit with a status of 0 if there are no errors.EXAMPLE
The idea is that you have all of the information concerning each computer in the one file. This makes it less likely that something will be omitted, and simpler to change if the name or IP address changes.By using netgroups, you can assign NFS mount permissions (the /etc/exports file) and rlogin permissions (the /etc/hosts.equiv file) based on the kind of machine they are.
Given a database file called ``example.com'' and which contains the following text
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$origin example.com. @ in soa exmaple.com. hostmaster.example.com. ( 990101001 ; serial 10800 ; refresh: 3 hours 1800 ; retry: 30 minutes 3600000 ; expire: 1000 hours 86400 ) ; minimum: 24 hours mercury in a 182.168.1.1 ether a 2:7:1:f:b7:fb in hinfo "IBM-PC 486" "MSDOS" venus in a 182.168.1.2 ether a 2:60:8c:2d:20:c4 in hinfo "IBM-6000/590" "UNIX AIX 3.2.5" earth in a 182.168.1.3 ether a 08:00:20:79:1f:0d in hinfo "Sun-4/5 (SPARCstation 5)" "UNIX SunOS 5.4" mars in a 182.168.1.4 ether a aa:0:4:0:86:53 in hinfo "DEC-Alpha 3000" "UNIX OSF/1 V3.2" jupiter in a 182.168.1.5 ether a 8:0:2b:99:49:ad in hinfo "DEC-VXT2000+ XTerminal" "Other: X11R5" bootp tc dec-vxt-2000 saturn in a 182.168.1.6 ether a 0:40:10:56:43:57 in hinfo "Apple-Macintosh IIsi" "MacOS 7.5.3" neptune in a 182.168.1.7 ether a 0:aa:0:69:7c:5b in hinfo "IBM-PC" "MSDOS" uranus in a 182.168.1.8 ether a 0:0:e8:a4:0:25 in hinfo "IBM-PC" "MSDOS" pluto in a 182.168.1.9 ether a 8:0:9:d:2a:87 in hinfo "HP-Laser-Jet 4" "None" lp in cname pluto
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% dns-ng example.com /etc/netgroup \ -g pc MSDOS -g mac MacOS \ -g unix UNIX -g other '.*' %
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mercury (mercury,-,) (mercury.example.com,-,) venus (venus,-,) (venus.example.com,-,) earth (earth,-,) (earth.example.com,-,) mars (mars,-,) (mars.example.com,-,) jupiter (jupiter,-,) (jupiter.example.com,-,) saturn (saturn,-,) (saturn.example.com,-,) neptune (neptune,-,) (neptune.example.com,-,) uranus (uranus,-,) (uranus.example.com,-,) pluto (pluto,-,) (pluto.example.com,-,) (lp,-,) (lp.example.com,-,) unix venus earth mars mac saturn pc mercury neptune uranus other jupiter pluto
Makefile
All of this can be automated using the following makefile fragment:-
/etc/netgroup: example.com dns-ng example.com $@ -g pc MSDOS \ -g mac MacOS -g unix UNIX -g other '.*'
If you were using NIS, NIS+ or LDAP you would update them, rather than the static file, especially since on many systems the static file doesn't do anything.
COPYRIGHT
dns-ng version 1.8,Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003, 2004, 2005, 2006 Peter Miller; All rights reserved.
The dns-ng program comes with ABSOLUTELY NO WARRANTY; for details use the 'dns-ng -VERSion Warranty' command. The dns-ng program is free software, and you are welcome to redistribute it under certain conditions; for details use the 'dns-ng -VERSion Redistribution' command.
AUTHOR
Peter Miller | E-Mail: | millerp@canb.auug.org.au |
/\/\* | Web: | http://www.canb.auug.org.au/~millerp/ |
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre