Prints out TLS certificate expiration date for remote servers.
stephen mcquay
6fac434ef1
This allows us to feed output to a program like SORT(1) and have a useful sorting. |
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vendor/github.com/pkg/errors | ||
Gopkg.lock | ||
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LICENSE | ||
main.go | ||
README.md |
certexp
A tool that reports certificate expiry for a collection of servers. It yields equivalent information to:
$ echo | openssl s_client -connect $hostname:$port 2> /dev/null | openssl x509 -noout -dates | grep notAfter
but fetches the information for a colleciton of hosts and does it concurrently.
example usage
$ certexp google.com amazon.com imap.gmail.com:993
google.com:443 2018-03-07 13:01:00 +0000 UTC
imap.gmail.com:993 2018-03-07 13:02:00 +0000 UTC
amazon.com:443 2018-09-21 23:59:59 +0000 UTC
or to stdin:
$ cat sites.txt
apple.com
google.com
amazon.com
imap.gmail.com:993
$ cat sites.txt | certexp
apple.com 2018-10-31 23:59:59 +0000 UTC
google.com 2018-02-13 15:19:00 +0000 UTC
amazon.com 2018-09-21 23:59:59 +0000 UTC
imap.gmail.com 2018-02-27 09:29:00 +0000 UTC