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