There is a sample in Jira API doc:
curl -D- -X GET -H "Authorization: Basic ZnJlZDpmcmVk" -H "Content-Type: application/json" "http://kelpie9:8081/rest/api/2/issue/QA-31"
What exactly does the -D- parameter mean? There is no description in curl documentation.
I'm also not sure whether -D- and -D mean the same thing.
It dumps headers to stdout.
The -D flag dumps headers to a file, and the following - instructs it to dump to stdout. From the linked spec:
-D, --dump-header
Write the protocol headers to the specified file.
It doesn't specify for this option, but this works like other options that take a filename:
Use "-" as filename to have the output sent to stdout.
