我可以通过查看curl文档来得到一个解决方案，该文档指定使用-来将输出输出到stdout。

curl -o - -I http://localhost

要用http返回代码获得响应，我可以这样做

curl -o /dev/null -s -w "%{http_code}\n" http://localhost

这个命令

 curl http://localhost -w ", %{http_code}"

将得到以逗号分隔的正文和状态;你可以把它们分开取出来。

您可以随心所欲地更改分隔符。

我可以通过查看curl文档来得到一个解决方案，该文档指定使用-来将输出输出到stdout。

curl -o - -I http://localhost

要用http返回代码获得响应，我可以这样做

curl -o /dev/null -s -w "%{http_code}\n" http://localhost

仅捕获响应: curl——location——请求GET“http://localhost:8000” 捕获响应和它的状态码: curl——location——request GET "http://localhost:8000" -w "%{http_code}" 在文件中捕获响应: curl——location——request GET "http://localhost:8000" -s -o "response.txt"

我发现这个问题是因为我想要独立访问响应和内容，以便为用户添加一些错误处理。

Curl允许您自定义输出。您可以打印HTTP状态代码以std输出并将内容写入另一个文件。

curl -s -o response.txt -w "%{http_code}" http://example.com

这允许您检查返回代码，然后决定是否值得打印、处理、记录响应等。

http_response=$(curl -s -o response.txt -w "%{http_code}" http://example.com)
if [ $http_response != "200" ]; then
    # handle error
else
    echo "Server returned:"
    cat response.txt    
fi

%{http_code}是一个由curl代替的变量。你可以做更多的事情，或者发送代码到stderr，等等。参见curl手册和——write-out选项。

-w, --write-out Make curl display information on stdout after a completed transfer. The format is a string that may contain plain text mixed with any number of variables. The format can be specified as a literal "string", or you can have curl read the format from a file with "@filename" and to tell curl to read the format from stdin you write "@-". The variables present in the output format will be substituted by the value or text that curl thinks fit, as described below. All variables are specified as %{variable_name} and to output a normal % you just write them as %%. You can output a newline by using \n, a carriage return with \r and a tab space with \t. The output will be written to standard output, but this can be switched to standard error by using %{stderr}.

https://man7.org/linux/man-pages/man1/curl.1.html

-i选项是你想要的:

curl -i http://localhost

在输出中包含协议头(H/F)

或者你可以使用verbose选项:

curl -v http://localhost

-v，——verbose使操作更健谈