15 lines
552 B
Bash
15 lines
552 B
Bash
#!/bin/bash
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# Send an email when the public ipv4 address changes
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if [[ -a /tmp/ipv4_address ]]; then
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CURRENT_IP=$(/usr/bin/dig +short myip.opendns.com @resolver1.opendns.com)
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PREVIOUS_IP=$(cat /tmp/ipv4_address)
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if [[ $CURRENT_IP != $PREVIOUS_IP ]]; then
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echo "IP address changed from $PREVIOUS_IP to $CURRENT_IP" | /usr/bin/mail -s 'IP address changed' sonnyba871@gmail.com
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echo $CURRENT_IP > /tmp/ipv4_address
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echo "Mail sent"
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fi
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else
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echo "$(/home/sonny/dotfiles/scripts/pubip)" > /tmp/ipv4_address
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fi
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