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escowles/check_cert.sh

Created May 18, 2020 12:45
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check_cert.sh
#!/bin/sh
URL=${1:-https://catalog.princeton.edu}
EXP=`curl --insecure -v $URL 2>&1 | grep "* expire date" | sed -e's/* expire date: //'`
EXP_S=`date -j -f "%B %e %H:%M:%S %Y %Z" +%s "$EXP"`
NOW_S=`date +%s`
echo $URL: $(( ($EXP_S - $NOW_S) / (3600*24) )) days until expiration
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