Check your server status with email notification
I wanted to do this for a while and never really sit down and code it. Yesterday I came across this pretty nice script by Ben from Coderholic which does exactly that: check your server status and send you an email if it is other than 200 (OK).
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#!/bin/bash
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# Query a supplied URL and output an error message if
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# the status code was not 200. Can be used as a cron
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# task to check if a server is up or not.
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# Ben Dowling – http://www.coderholic.com
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# The URL to query
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if [ $# -ne 1 ]
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then
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echo "Usage: $0 <URL>";
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exit;
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fi
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url=$1;
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response=$(curl -s -I -L $url | grep HTTP);
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status=${response#* }; # Strip off characters up to the first space
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status=${status:0:3}; # Just use the 3 digit status code
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if [ "$status" != "200" ]
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then
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echo "Error fetching $url. Status code '$status'";
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fi
Nice.