digger.sh

digger.sh

#!/bin/bash
# DIGGER by Fox
# Usage:
#   digger http://google.com


if [ $# -eq 0 ]
  then
    printf "Inform the domain: "
    read var_domain
elif [ -n $1  ]
  then
    var_domain=$1
fi

echo $var_domain | grep http > /dev/null 2>&1
if [ $? -eq 0 ]
  then
    var_domain=$(echo $var_domain | awk 'gsub("/", "") && gsub("http:", "") || gsub("https:", "")')
fi

dig +noall +answer $var_domain A
dig +noall +answer $var_domain NS
dig +noall +answer $var_domain MX
echo

mx_lines=$(dig +noall +answer $var_domain MX | wc -l)

if [[ $mx_lines == "1" ]];
  then
    host $(dig +noall +answer $var_domain MX | awk '{print $6}')
  else
    for i in $(dig +noall +answer $var_domain MX | awk '{print $6}');
      do
        host $i;
    done
fi