Fix bashisms and whitespace

Make the script compatible with any POSIX shell

Obtained from FreeBSD ports

Author: AMDmi3

dnsmap-bulk.sh

@@ -1,5 +1,5 @@
-#!/bin/bash
-if [[ $# -ne 1 && $# -ne 2 ]]
+#!/bin/sh
+if [ $# -ne 1 -a $# -ne 2 ]
 then
 	echo "usage: `basename $0` <domains-file> [results-path]";
 	echo "e.g.:";
@@ -9,11 +9,11 @@ then
 fi
 for i in `cat $1`
 do
-	if [[ $# -eq 1 ]] 
-	then	
+	if [ $# -eq 1 ]
+	then
 		dnsmap $i
-	elif [[ $# -eq 2 ]]
+	elif [ $# -eq 2 ]
 	then
 		dnsmap $i -r $2
 	fi
-done		
+done