curl

Created: January 06, 2025

1. Send JSON

curl -X POST [URL] \
     -H "Content-Type: application/json" \
     -d '{"key": "value"}'

Use -d for URL-encoded form data or -F for multipart form data (file uploads).

curl [URL] -d "key1=value1&key2=value2"
curl [URL] -F key1=value1 -F key2=value2 -F file=@filename

Use -O to save with the remote filename, or -o to specify a custom name.

curl -O [URL]
curl -o output.txt [URL]

curl --cookie "name=value" [URL]

To save and reuse cookies across requests:

curl -c cookies.txt [URL]         # Save cookies to file
curl -b cookies.txt [URL]         # Send cookies from file

curl -k [URL]

curl -I [URL]

curl -O [URL1] -O [URL2]

curl -u username:password [URL]

For bearer tokens:

curl -H "Authorization: Bearer [TOKEN]" [URL]

curl -L [URL]

curl -x [protocol://][host][:port] -U user:password [URL]

curl -v [URL]

curl -H "X-Custom-Header: value" [URL]

curl --connect-timeout 5 --max-time 10 [URL]

curl -C - -O [URL]

curl -i [URL]

Suppress progress meter and error messages:

curl -s [URL]
curl -sS [URL]   # Silent but show errors

curl [URL] -o filename.txt
curl [URL] > filename.txt

curl --limit-rate 100K [URL]

curl -X POST [URL] -d @data.json -H "Content-Type: application/json"

curl -X PUT [URL] -d '{"key": "value"}' -H "Content-Type: application/json"
curl -X DELETE [URL]