> For the complete documentation index, see [llms.txt](https://blog.jasonzhang.cc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blog.jasonzhang.cc/source/part-1/curl.md).

# curl

```
curl -s -D - -o /dev/null http://example.com/style.css
```

```
curl -s -D - -o /dev/null https://xxx.xxx.xxx
```