18 lines
301 B
Bash
18 lines
301 B
Bash
|
#!/bin/bash
|
||
|
|
IP4BLOCK="$1"
|
||
|
|
|
||
|
|
echo "Doing reverse lookup for $IP4BLOCK.0/24..."
|
||
|
|
|
||
|
|
ctr=1
|
||
|
|
while [ $ctr -le 255 ]; do
|
||
|
|
ipaddress="$IP4BLOCK.$ctr";
|
||
|
|
result=`dig +short -x $ipaddress`;
|
||
|
|
result=`echo $result | sed -e 's#\n##g'`
|
||
|
|
if [ "$result" != "" ]; then
|
||
|
|
echo "$ipaddress $result";
|
||
|
|
fi;
|
||
|
|
((ctr++));
|
||
|
|
done
|
||
|
|
|
||
|
|
|