curl -m, --max-time

• https://curl.se/docs/manpage.html#-m

curl -m 10 https://status.nuki.io/en/ 2>&1 | grep -i outage

curl --connect-timeout

curl: (52) Empty reply from server

See also

• cURL, curl -s, -X, -x, curl -T, curl --help, curl -L, curl -m, curl -o, curl -X POST, curl -d, curl --header, curl -I, curl --silent, curl -Is, curl -k or curl --insecure, curl -XPUT, curl -d, ~/.curlrc, curl -i, curl --version, curl --help
• timeout, curl --max-time