This is nslookup and host from bind-4.9.5-T4B.

There purpose is to query internet domain name servers for
information about the servers.

You can put nslookup and host anywhere in your path e.g. /bin, usr/bin,
/usr/sbin, etc.

Put nslookup.help in the /usr/lib directory.
Put .nslookuprc in the /root directory.

You can read nslookup.help from within nslookup when your connected to
your service provider e.g. ethernet, or slip/ppp.

~# nslookup

> help
> server something.com     <-To get info on a server.
> ls -d something.com      <-To get lots of info.
> exit

The .man pages are formatted so you can read them with more or less.
~# more nslookup.man

ftp.cert.dfn.de
/pub/tools/net/bind/testing
bind-4.9.5-T4B.tar.gz
