# OpenSSL 使用技巧

## 查看证书信息

```bash
openssl x509 -in ca.crt -noout -text
```

## 查看在线域名的证书信息

```bash
openssl s_client -connect ms.icometrix.com:443 -cipher 'DEFAULT:!ECDH'
```


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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://doc.tanmer.cn/ubuntu/openssl-shi-yong-ji-qiao.md?ask=<question>
```

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The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.