draconisplusplus/subprojects/curl-8.10.1/docs/cmdline-opts/show-headers.md

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c SPDX-License-Identifier Long Short Help Protocols Category Added Multi See-also Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. curl show-headers i Show response headers in output HTTP FTP important verbose output 4.8 boolean
verbose
-i $URL

--show-headers

Show response headers in the output. HTTP response headers can include things like server name, cookies, date of the document, HTTP version and more. With non-HTTP protocols, the "headers" are other server communication.

To view the request headers, consider the --verbose option.

Prior to 7.75.0 curl did not print the headers if --fail was used in combination with this option and there was error reported by server.

This option was called --include before 8.10.0. The previous name remains functional.