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scottlee/Get external IP, write to file

Created August 12, 2011 20:31
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Get external IP address and write to file if it has changed
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Get external IP, write to file
#!/bin/bash
# Where should this file be stored?
ipfile=~/Desktop/external-ip.txt
# Go ahead now, go ahead and get that IP
IP=$(curl -s http://icanhazip.com)
# Has the address changed? If it has go ahead and write that bad boy down. If not, no worries.
OLDIP=""
if [ -f "$ipfile" ]; then
OLDIP=$(<$ipfile)
fi
# Write the new IP to that file we mentioned earlier.
echo $IP > $ipfile
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