1 #!/bin/sh

     2 

     3 openssl x509 -in $1 -enddate -noout | grep notAfter| awk -F= '{print $2}' | \

     4 while read l; do

     5 	t=`date -j -f "%b %d %T %Y %Z" "$l" +%s`

     6 	n=`date +%s`

     7 	echo `expr $t - $n`

     8 done