Created
April 16, 2012 11:01
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Run this script specifying a URL. The script will check the URL every 60 seconds to see if the contents change. If the contents change the script will beep and will continue until aborted.
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function check_site() | |
{ | |
local stored_hash='' | |
local changed=false | |
while sleep 60; do | |
# beep a bunch of times: | |
if $changed; then | |
if [[ "$(command -v osascript)" ]]; then | |
osascript -e "beep 5" | |
elif [[ "$(command -v tput)" ]]; then | |
tput bel | |
else | |
echo "IT CHANGED!" | |
fi | |
continue; | |
fi | |
local temp_hash=`curl --silent "$1" | md5` | |
# if stored_hash isn't set, then set it, | |
# otherwise check if stored_hash = temp_hash, | |
# if they aren't equal, beep to let me know | |
if [[ -z "$stored_hash" ]]; then | |
stored_hash=$temp_hash; | |
elif [[ ! "$temp_hash" = "$stored_hash" ]]; then | |
changed=true | |
fi | |
done | |
} | |
if [ "$1" = "-h" -o "$1" = "--help" -o -z "$1" ]; then | |
echo | |
echo "Usage: $0 [url-to-check]" | |
echo | |
echo -e "Run this script specifying a URL as the only argument," \ | |
"\nthe script will check the URL and take a hash of the html" \ | |
"\ncontents at the URL. The script will check this every 60" \ | |
"\nseconds to see if the contents change. If the contents" \ | |
"\nchange the script will beep to alert you." | |
exit 0 | |
fi | |
check_site "$1"; |
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