nslookup: add page (#1174)
nslookup: add page (#1174)

Non interactive use of nslookup on *nix-like systems: https://linux.die.net/man/1/nslookup
cptdeka10/tldr,felixonmars/tldr,zoisom/tldr,cptdeka10/tldr,felixonmars/tldr,Phizho/tldr,zoisom/tldr,katekyan/tldr,UncommonPleb/tldr,slash3b/tldr,katekyan/tldr,slash3b/tldr,deekim/tldr,cptdeka10/tldr,deekim/tldr,felixonmars/tldr,UncommonPleb/tldr,Phizho/tldr,slash3b/tldr,katekyan/tldr,deekim/tldr,Phizho/tldr,zoisom/tldr,UncommonPleb/tldr