48 lines
1.2 KiB
Bash
48 lines
1.2 KiB
Bash
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#!/bin/bash
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################################################################################
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# A simple script to get the DNS name of an IP and test if its online #
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# #
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# NOW WITH CONVENIENT CSV FORMAT #
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################################################################################
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PIDS=""
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if [[ -z $1 ]]; then
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echo "Invalid Usage"
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echo "Example: ./ipChecker.sh ip-list.txt"
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exit 1
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fi
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function checkIP() {
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#Try and resolve hostname. If none exists report N/A
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digIP=$(
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record=$(dig -x $1 +short);
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if [ -z $record ]; then echo "N/A";
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else echo ${record::-1};
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fi)
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#ping the address and grep for the number of received packets. This is 0 if it does not ping
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pingIP=$(ping -c 5 -i 0.2 -w 0.5 $1 | grep -i received | awk '{print $4}')
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#if the PingIP variable is 0 then the address does not ping.
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if [[ 0 -eq $pingIP ]]; then
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doesPing="NO"
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else
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doesPing="YES"
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fi
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printf "%s,%s,%s\n" $1 $digIP $doesPing
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}
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echo "IP,DNS Entry,Is Online"
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#read each line in the file passed as the first arguement
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while read ip; do
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checkIP $ip &
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PIDS+="$! "
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done < $1
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for pid in $PIDS; do
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wait $pid
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done
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