LINUX COMMAND ATLAS · COMMAND GUIDE

Linux curl command

Transfer data to or from a URL; -I requests response headers only.

curl manual

Syntax

Command form

curl [OPTION]... URL...

8 options

Option	What it does
`-I, --head`	Fetch response headers only.
`-L, --location`	Follow HTTP redirects.
`-o FILE, --output FILE`	Write response data to FILE.
`-O, --remote-name`	Save using the remote filename.
`-H, --header HEADER`	Add a request header.
`-d, --data DATA`	Send request data (often used for POST).
`-f, --fail`	Return an error for HTTP error responses without outputting the error page.
`-sS, --silent --show-error`	Hide progress while still showing errors.

2 examples

Transfer data to or from a URL; -I requests response headers only.

curl -I https://example.com

Save a successful response to a file and report errors.

curl -fsS https://example.com/data.json -o data.json

curl can send data and change remote state as well as download files. Check the URL, headers and request method before using -d or -X.