Solaris

 
 while (9)
#set n=>1
if ($# != 1) then
    echo broken
  exit
endif

if ( "`ping $1 2 | grep alive`" != "" ) then
     if ("`nslookup $1 | grep find`" != "") echo "$1"
 endif
exit

nslookup ipaddress nameserver

#!/bin/tcsh
if ($# < 1) then
   echo paramter broken
   exit
endif
set b = ($*)
 
foreach i ( $b )
  echo $i host informations
  echo "*******************"
   if ( " `/usr/sbin/ping $i 5 | grep alive`" == "" ) then
      echo ping broken
      echo ""
   endif
   if ( "`nslookup $i | grep find`" == "" ) then
      echo $i host records
      echo "*************"
      nslookup $i
   else
      echo $i host does not match any records
      echo "********************************"
      echo ""
      shift
   endif
end

#!/bin/ksh
for i
do
	ping $i 2 >/dev/null && dig +short -x $i >/dev/null && echo $i
done