curl

• man page
• repo
• smb section in the manual
• tutorial

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

-d, --data <data> Send specified data in POST request, makes -X POST redundant.

-f, --fail Fail silently (don’t output HTML error form if returned).

-F, --form <name=content> Submit form data.

-g, --globoff use it when your URL includes []{}

-H, --header <header> Headers to supply with request.

-i, --include Include HTTP headers in the output.

-I, --head Fetch headers only.

-k, --insecure Allow insecure connections to succeed, i.e. ignore SSL/TLS errors.

-L, --location Follow redirects.

-o, --output <file> Write output to . Can use `--create-dirs` in conjunction with this to create any directories specified in the `-o` path.

-O, --remote-name Write output to file named like the remote file (only writes to current directory).

-s, --silent Silent (quiet) mode, no progress bar displayed. Use with -S to force it to show errors.

-T, --upload-file <file> transfers the specified local file to the remote URL.

-v, --verbose Provide more information (useful for debugging).

-w, --write-out <format> Make curl display information on stdout after a completed transfer. See man page for more details on available variables. Convenient way to force curl to append a newline to output: -w "\n" (can add to ~/.curlrc).

-X, --request The request method to use.

http post / put

Specify the request type:

• -X POST - is assumed and can be omitted
• -X PUT

Specify the Content-Type header as one of:

• -H "Content-Type: application/x-www-form-urlencoded"
• -H "Content-Type: application/json"

Add the corresponding payload:

• -d "param1=value1&param2=value2" or -d @data.txt
• -d '{"key1":"value1", "key2":"value2"}' or -d @data.json

File data.txt:

param1=value1&param2=value2

File data.json:

{
  "key1":"value1",
  "key2":"value2"
}

Examples

http post application/x-www-form-urlencoded

application/x-www-form-urlencoded is the default, -X POST implied when -d is used:

curl -d "param1=value1&param2=value2" http://localhost:3000/data

explicit:

curl -d "param1=value1&param2=value2" \
    -H "Content-Type: application/x-www-form-urlencoded" \
    http://localhost:3000/data

from a data file:

curl -d "@data.txt" http://localhost:3000/data

http post application/json

curl -d '{"key1":"value1", "key2":"value2"}' \
    -H "Content-Type: application/json" \
    http://localhost:3000/data

from a data file:

curl -d "@data.json" http://localhost:3000/data

smb

Given that curl only supports SMB protocol version 1, the following is pretty much useless.

Download a file from the SMB server:

curl -u "domain\username:passwd" smb://server.example.com/share/file.txt

Upload a file to the SMB server:

curl -T file.txt -u "domain\username:passwd" smb://server.example.com/share/

ssh

Get a file from an SSH server using SCP using a (not password-protected) private key to authenticate:

curl -u username: --key ~/.ssh/id_rsa scp://example.com/~/file.txt

Get a file from an SSH server using SCP using a (password-protected) private key to authenticate:

curl -u username: --key ~/.ssh/id_rsa --pass private_key_password \
    scp://example.com/~/file.txt