Curl Dump Response Headers to STDOUT and Ignore Response Body

Tags: May 7, 2018 6:48 AM

Goals

Return only HTTP response header when opening a web page using curl. This is useful when we are interested in processing response headers only.

Command

We will utilize /dev/stdout and /dev/null to achieve what we want.

$ curl https://notes.rioastamal.net -D /dev/stdout -o /dev/null --silent
HTTP/2 200
date: Sun, 06 May 2018 23:42:37 GMT
content-type: text/html; charset=UTF-8
set-cookie: __cfduid=d6347d57f364b276150034b241b19cdb01525650157; expires=Mon, 06-May-19 23:42:37 GMT; path=/; domain=.rioastamal.net; HttpOnly
expires: Sun, 06 May 2018 23:42:37 GMT
cache-control: private, max-age=0
last-modified: Sun, 06 May 2018 23:42:05 GMT
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
server: cloudflare
cf-ray: 416f4deb6f51a320-HKG

Reference

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