set a timeout and error message on my script

Question

I have a script that im trying to create an error message and timeout for if the openssl takes to long. Here is the script. Can anyone help me? I'm a little lost.

FILENAME=$1
while read -r ip; do
 echo "${ip}"
 echo -n | openssl s_client -connect "${ip}:443" -showcerts 2>/dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | openssl x509 -noout -dates

done < <(cut -d "," -f2 $FILENAME | tail -n +2)

Answer 1

You could use timeout from gnu core utils package(manual)
Maybe do something like:

while read -r ip; do
 timeout [timeout duration] [your ssl command]

 if [ $? -eq 124 ]; then
  echo FAIL
 else
  echo OK
 fi
done