Hey guys I am trying to figure out a way to time out a variable if it goes past X time trying to get contents, this is based on touching a server to verify it has SSL. If the server doesn't respond in X seconds I would like to just set the variable as empty (or set some other flag if possible)
What I am using is
response=$(echo ^D |openssl s_client -connect ${line}:443 2> /dev/null |openssl x509 -noout -hash |grep -E '^[[:xdigit:]]{8}')
where $line is baidu.com for now
I tried something like this
( cmdpid=$BASHPID;
( sleep 10; kill $cmdpid; echo -e "\n\t$line missed window, terminating...\n"
) & exec response=$(echo ^D |openssl s_client -connect ${line}:443 2> /dev/null |openssl x509 -noout -hash |grep -E '^[[:xdigit:]]{8}')
)
But realized several issues, such as A) I am in a subshell and cannot get my variable out, B) I am trying to run response=#hash and returning errors etc
What would the best way to run a timeout on capturing my variable?
Thanks
IFS= read -t 10 -d '' variable < <(yourcommand)
e.g.
IFS= read -t 10 -d '' response < <(echo ^D |openssl s_client -connect ${line}:443 2> /dev/null |openssl x509 -noout -hash |grep -E '^[[:xdigit:]]{8}')