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

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

Get verbose response

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

$ curl -v http://localhost:8888

Fetch only the HTTP headers

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

$ curl -I http://localhost:8888

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

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

Resources

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

• curl man page
• List of curl options · GitHub