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1.通过curl查看
在linux下，curl命令工具的功能跟浏览器的功能类似，只不过没有渲染功能,通过下面命令可以查看
[root@localhost ~]# curl -v http://www.imooc.com >/dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* About to connect() to www.imooc.com port 80 (#0)
* Trying 117.121.101.40...
* Connected to www.imooc.com (117.121.101.40) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.29.0
> Host: www.imooc.com
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Server: nginx
< Date: Fri, 04 Jan 2019 05:58:47 GMT
< Content-Type: text/html
< Content-Length: 178
< Connection: keep-alive
< Location: https://www.imooc.com
<
{ [data not shown]
100 178 100 178 0 0 1723 0 --:--:-- --:--:-- --:--:-- 1728
* Connection #0 to host www.imooc.com left intact
2.通过chrome浏览器查看
chrome浏览器提供了开发者工具，也可以看到相关请求信息
