curl
cURL
-L, –location follow redirects
查看详细过程，可以看到返回 status code
-v, –verbose more output, indicates the direction
-s, –silent don’t show a progress bar
-o, –output /dev/null don’t show received body
只显示返回请求头
-I, –only show http head
cURL
-L, –location follow redirects
查看详细过程，可以看到返回 status code
-v, –verbose more output, indicates the direction
-s, –silent don’t show a progress bar
-o, –output /dev/null don’t show received body
只显示返回请求头
-I, –only show http head