12.2. Interactive Versus Noninteractive
Let's start our
tutorial on nslookup by looking at how to start
it and how to exit from it. You can run nslookup
either interactively or noninteractively. If you only want to look up
one record for one domain name, use the noninteractive form. If you
plan on doing something more extensive, such as changing name servers
or options, use an interactive session.
To start an interactive session, just type nslookup
:
% nslookup
Default Server: terminator.movie.edu
Address: 0.0.0.0
> ^D
If you need help, type ? or
help.[94] When you want to exit,
type
^D (control-D) or
exit. If you try to exit from
nslookup by interrupting it with
^C
(or whatever your interrupt character is), you won't
get very far.
nslookup catches the interrupt,
stops whatever it is doing (like a zone transfer), and gives you the
> prompt.
For a noninteractive lookup, include the name you are looking up on
the command line:
% nslookup carrie
Server: terminator.movie.edu
Address: 0.0.0.0
Name: carrie.movie.edu
Address: 192.253.253.4
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12. nslookup and dig |  | 12.3. Option Settings |