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DNSCHECK(8)
NAME
  dnscheck - checks forward and reverse DNS entries

SYNOPSIS
  dnscheck [ -c ] [ -h ] [ -t ] [ -v ] [ -x ] [ host ... ]

DESCRIPTION
  The dnscheck utility checks the forward and reverse DNS entries for the
  given host(s) or for the value returned by gethostname(2) if the host name
  or IP address is omitted.  The host argument may be either a normal domain
  name such as myhost.foobah.org or an IP address in dotted-quad
  [123.234.123.234] form and there may be more than one such argument given.

  The intent of this utility is to run it without any arguments and have it
  tell you if your system's concept of what it's name is matches, or is
  consistent with, what the DNS thinks is the name of your system.  This is
  useful in tracking down obscure problems when configuring the Interlink AAA
  server's clients(5) file.

  The forward and reverse information is sent to standard output followed by
  any information for multiple address and or multiple DNS names, one per
  line.	 If the host given is a CNAME then both it and the fully qualified
  DNS name are printed along with its IP address.  If the host given is a
  fully qualified DNS name which has aliases (CNAMEs), then dnscheck is not
  able to retrieve these from the DNS.

OPTIONS
  -c   Toggles checking mode.  This option defaults to "on".  If this option
       is toggled to "off" then the dnscheck utility will perform only one of
       the two checks, either forward or reverse, for the given host.

  -h   Prints a usage message.

  -t   Turns on terse mode.  This option defaults to "off".

  -v   Shows the RCS version information.

  -x   This option is used to increase the debugging level.  The debugging
       level is initially zero.	 Each -x option adds to the default, thereby
       enabling more and more debugging information to be produced.

SEE ALSO
  gethostname(2), clients(5)

BUGS

Index for Section 8

Alphabetical listing for D

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