Web Development

cURL HTTP

GET, POST JSON, headers, auth, redirects, TLS, and useful script flags

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Requests

6 entries

Requests: syntax and descriptions
Syntax	Description
`curl https://example.com/`	GET a URL
`curl -I https://example.com/`	Headers only (HEAD)
`curl -i https://example.com/`	Include response headers
`curl -X PUT URL`	Set the HTTP method
`curl -X DELETE URL`	DELETE a resource
`curl -X PATCH URL`	PATCH a resource

Bodies

6 entries

Bodies: syntax and descriptions
Syntax	Description
`curl -d "a=1&b=2" URL`	POST form-encoded data
`curl -d @file.txt URL`	POST body from a file
`curl --json '{"ok":true}' URL`	POST JSON with type headers
`curl --json @data.json URL`	POST JSON from a file
`curl -F "[email protected]" URL`	Multipart file upload
`curl --data-urlencode "q=a b" URL`	URL-encode a field

Headers and auth

6 entries

Headers and auth: syntax and descriptions
Syntax	Description
`curl -H "Accept: application/json" URL`	Add a request header
`curl -H "Authorization: Bearer TOKEN" URL`	Send a bearer token
`curl -u user:pass URL`	HTTP Basic auth
`curl -A "MyAgent/1.0" URL`	Set User-Agent
`curl -e https://referrer.example/ URL`	Set Referer
`curl -b "sid=abc" URL`	Send a Cookie header

Output

6 entries

Output: syntax and descriptions
Syntax	Description
`curl -o file.bin URL`	Write the body to a file
`curl -O URL`	Save using the remote filename
`curl -sS URL`	Silent progress, still show errors
`curl -v URL`	Verbose request and response
`curl -w "%{http_code}\n" -o /dev/null -s URL`	Print the status code
`curl --compressed URL`	Ask for compressed content

Redirects and TLS

5 entries

Redirects and TLS: syntax and descriptions
Syntax	Description
`curl -L URL`	Follow redirects
`curl -k URL`	Skip TLS certificate check
`curl --cacert ca.pem URL`	Trust a custom CA file
`curl --cert client.pem --key key.pem URL`	Send a client certificate
`curl --tlsv1.2 URL`	Require TLS 1.2 or newer where supported

Timeouts and scripts

6 entries

Timeouts and scripts: syntax and descriptions
Syntax	Description
`curl --connect-timeout 5 URL`	Cap the connect phase
`curl --max-time 30 URL`	Cap the whole transfer
`curl -f URL`	Fail on HTTP error status
`curl --fail-with-body URL`	Fail on HTTP error, keep the body
`curl -fsSL URL`	Silent, fail, show errors, follow redirects
`curl -D headers.txt URL`	Write response headers to a file

Sources

1 entries

Sources: syntax and descriptions
Syntax	Description
https://curl.se/docs/manpage.html	curl manual: HTTP requests, redirects, authentication, TLS, and script options.

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