curl¶

To make a basic GET request

curl <url>

To follow redirects

curl -L <url>

To save output to a file

curl -o <file> <url>

To save output using the remote filename

curl -O <url>

To download silently (no progress bar)

curl -sO <url>

To make a POST request with JSON body

curl -X POST <url> \
  -H "Content-Type: application/json" \
  -d '{"key": "value"}'

To make a POST request with form data

curl -X POST <url> -d "param1=value1&param2=value2"

To make a PUT request

curl -X PUT <url> -H "Content-Type: application/json" -d '{"key": "value"}'

To make a DELETE request

curl -X DELETE <url>

To add a custom header

curl -H "Authorization: Bearer <token>" <url>

To use basic authentication

curl -u <username>:<password> <url>

To show response headers only

curl -I <url>

To show both request and response headers (verbose)

curl -v <url>

To suppress output, show only HTTP status code

curl -s -o /dev/null -w "%{http_code}" To set a timeout (seconds):

curl --max-time 10 <url>

To retry on failure

curl --retry 3 --retry-delay 2 <url>

To use a proxy

curl -x http://<proxy-host>:<port> <url>

To skip SSL certificate verification (insecure)

curl -k <url>

To specify a custom CA certificate

curl --cacert <ca-cert.pem> <url>

To send a file as multipart form data

curl -F "file=@<path/to/file>" <url>

To pipe output to jq for JSON parsing

curl -s <url> | jq '.'

To upload a file with PUT

curl -T <file> <url>

To resume a partial download

curl -C - -O <url>

To limit download speed (bytes/sec)

curl --limit-rate 100K -O <url>

To make a request with a cookie

curl -b "name=value" <url>

To save and reuse cookies

curl -c cookies.txt -b cookies.txt <url>

To send a request and write headers to a file

curl -D headers.txt <url>

To use HTTP/2

curl --http2 <url>

To check the effective URL after redirects

curl -Ls -o /dev/null -w "%{url_effective}" To use a specific network interface:

curl --interface eth0 <url>

To make a GitHub API request

curl -s -H "Authorization: Bearer <token>" \
  "https://api.github.com/repos/<owner>/<repo>/releases/latest" | jq '.tag_name'