35 lines
906 B
Markdown
35 lines
906 B
Markdown
# certexp
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A tool that reports certificate expiry for a collection of servers. It yields
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equivalent information to:
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```bash
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$ echo | openssl s_client -connect $hostname:$port 2> /dev/null | openssl x509 -noout -dates | grep notAfter
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```
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but fetches the information for a colleciton of hosts and does it concurrently.
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## example usage
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```bash
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$ certexp google.com amazon.com imap.gmail.com:993
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google.com:443 2018-03-07 13:01:00 +0000 UTC
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imap.gmail.com:993 2018-03-07 13:02:00 +0000 UTC
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amazon.com:443 2018-09-21 23:59:59 +0000 UTC
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```
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or to stdin:
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```bash
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$ cat sites.txt
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apple.com
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google.com
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amazon.com
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imap.gmail.com:993
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$ cat sites.txt | certexp
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apple.com 2018-10-31 23:59:59 +0000 UTC
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google.com 2018-02-13 15:19:00 +0000 UTC
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amazon.com 2018-09-21 23:59:59 +0000 UTC
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imap.gmail.com 2018-02-27 09:29:00 +0000 UTC
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```
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