How to check SSL certificate expiration time through shell script
In this blog we will learn "How to check SSL certificate number of days for expiration of our domain"
I am going to show here in a Linux environment by using Shell script.
Create file by the name checkssl.sh
- sudo nano checkssl.sh
Code- Copy this code and save file.
data=`echo | openssl s_client -servername $1 -connect $1:${2:-443} 2>/dev/null | openssl x509 -noout -enddate | sed -e 's#notAfter=##'`
ssldate=`date -d "${data}" '+%s'`
nowdate=`date '+%s'`
diff="$((${ssldate}-${nowdate}))"
echo $((${diff}/86400))
Output- You will get result as below
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