Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
dns-ethers(1)		     General Commands Manual		   dns-ethers(1)

NAME
     dns-ethers - generate /etc/ethers entries from DNS tables

SYNOPSIS
     dns-ethers [ option...  ][ infile [ outfile ]]
     dns-ethers -Help
     dns-ethers -VERSion

DESCRIPTION
     The dns-ethers program is used to generate the /etc/ethers entries from DNS
     tables.

     If the input file is not named, or the name '-' is used, the standard input
     is read.

     If  the  output  file  is not named, or the name '-' is used, the startdard
     output is written.

     A fake DNS type of ``ether'' is used, instead of the usual ``in'' type,  to
     enable the use of the ``a'' to store the addresses.

OPTIONS
     The following options are understood:

     -Verbose
	     This  option  may be used to see what dns-ethers deciphers each re-
	     source record as.

     -Help
	     This option may be used to get more information about how	to  used
	     th dns-ethers program.

     -VERSion
	     This  option may be used to see what version of the dns-ethers pro-
	     gram is running.

     -Idirectory
	     This option may be used to set the search path for include files.

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.

     Given a database file called ``example.com'' and which contains the follow-
     ing text
     You can generate the /etc/ethers file using the following command
	    % dns-ethers example.com /etc/ethers
	    %
     Here is what you would see as the output
     Note that the output uses relative names.

   Makefile
     All of this can be automated using the following makefile fragment:
	    /etc/ethers: example.com
		    dns-ethers example.com $@
     By doing this, all you need to do is edit the example.com file, and the use
     the make(1) command to bring everything up-to-date.

     If  you were using NIS, NIS+ or LDAP you would update them, rather than the
     static file.

Reference Manual		     dnsutl			   dns-ethers(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=dns-ethers&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

home | help