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viktordw/ip-check.sh

Created August 12, 2022 13:11
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Check public IP address of server
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ip-check.sh
#!/bin/bash
# NOTE: route command is part of dnsutils package on Debian, and net-tools on Ubuntu
# Based on following Stack Overflow answer:
# https://stackoverflow.com/questions/14594151/methods-to-detect-public-ip-address-in-bash/22209864#22209864
MAINIF=$( route -n | grep '^0\.0\.0\.0' | head -n 1 | awk '{print $NF}' )
IP=$( ifconfig $MAINIF | awk -v row=2 'FNR == 'row' {print $2}' )
echo $IP
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