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K-Sato
K-Sato

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Basic curl options

Overview

Here are some super basic curl command options all web-application-developers should know.
If there is/are any other command option/options, you think, should be on the list, plz leave a comment below with the option/options.

Add headers

You can use -H to add headers to your request.

$ curl -H "Content-Type: application/json" http://localhost:8888
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Make a POST request with Parameters

You can make a post request with parameters with the -d (-data) flag.
You can specify the method you want to use with -X. In this case, you are specifying to use the POST method.

$ curl -d '{"name":"value1", "content":"value2"}'  -X POST http://localhost:3000
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Get verbose response

You can get verbose response with the -v option. The -v stands for -verbose.

$ curl -v http://localhost:8888
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Fetch only the HTTP headers

You can use -I/--head flag to only fetch the headers.

$ curl -I http://localhost:8888
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Add cookies

You can pass the data to the HTTP server as a cookie with the -b/--cookie command.
NOTE that the file specified with -b/--cookie is only used as input. No cookies will be stored in the file. To store cookies, use the -c/--cookie-jar option

$ curl -c cookie.txt -b cookie.txt -b "name=value" http://example.com
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Send Data like sending them via forms

This lets curl emulate a filled-in form in which a user has pressed the submit button. This causes curl to POST data using the content-type multipart/form-data according to RFC1867.

$ curl -F title="Test" -F author="Test" -F attachment-file=@test.txt http://localhost:8880
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Resources

Here are some resources to know more about the curl command.

Top comments (18)

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pranay_rauthu profile image
pranay rauthu

writing curl commands is pain. I have created a tool to generate them.

pranayrauthu.github.io/fetcher/#/curl

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Oliver Jamie

I appreciate the provided list of basic curl command options for Linux beginners. These options, such as adding headers, making POST requests with parameters, getting verbose responses, fetching only the HTTP headers, and adding build now gg cookies, are essential for web application developers.

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