Linux

curl

curl commands for HTTP requests, authentication, file transfers and TLS inspection.

Basic Requests

curl <url>GET request, print response body

curl -s <url>Silent mode (no progress meter)

curl -o file.html <url>Save response to file

curl -O <url>Save with the remote filename

curl -L <url>Follow redirects

curl -I <url>Fetch headers only (HEAD request)

curl -v <url>Verbose: show headers and connection details

curl -w "%{http_code}" -o /dev/null <url>Print HTTP status code only

curl -X POST <url>Explicit POST request

curl -X DELETE <url>DELETE request

curl -d "key=value" <url>POST URL-encoded body

curl -d '{"key":"val"}' -H "Content-Type: application/json" <url>POST JSON body

curl -F "file=@photo.jpg" <url>Upload file as multipart form

curl --data-binary @file.txt <url>Send raw file contents as body

curl -H "Content-Type: application/json" <url>Set a request header

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

curl -u user:pass <url>HTTP Basic auth

curl -A "MyAgent/1.0" <url>Set User-Agent header

curl -b "session=abc" <url>Send a cookie

curl -c cookies.txt <url>Save response cookies to file

curl -k <url>Skip TLS certificate verification

curl --cacert ca.crt <url>Use a custom CA certificate

curl --cert client.crt --key client.key <url>mTLS client certificate

curl --resolve host:443:1.2.3.4 <url>Override DNS for a specific host

curl -s <url> | jq .Pretty-print JSON response

curl -D - -o /dev/null <url>Print only response headers

curl -w "\n%{time_total}s\n" <url>Print total request time

curl -w "%{size_download} bytes\n" <url>Print response size

curl --compressed <url>Request and decompress gzip response