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soyeomul@penguin:~$ openssl s_client -connect www.kernel.org:443 -servername www.kernel.org 2> /dev/null | openssl x50
9 -noout -dates
notBefore=Mar 21 18:34:19 2022 GMT
notAfter=Jun 19 18:34:18 2022 GMT
soyeomul@penguin:~$
<https://learn.akamai.com/en-us/webhelp/ ... 03D48.html>
[크롬북에서 적었어요~]