cURL
cURL is a computer software project providing a library and command-line tool for transferring data using various protocols. The cURL project produces two products, libcurl and cURL. It was first released in 1997. The name stands for "Client URL". (Wikipedia)
Contents
Installation
Debian
apt-get install -y curlUsage
| Parameter | Description |
|---|---|
| --connect-timeout <seconds> | Timeout in seconds |
| --location | Follow redirect |
| --include [-i] | Output HTTP header |
| --insecure | Allow insecure certificates |
| --silent | Quit outout |
| --user <user>:<pass> | Basic auth |
| --header '<key>: <value>' | Header |
Download a file
Further information: wget vs curl: How to Download Files Using wget and curl
curl -O http://example.org/sample.zip(With wget it is wget http://example.org/sample.zip)
Download a file silently with a output name
curl --output local-name.txt --silent http://example.org/sample.zipPOST request
HTTP POST sending JSON with authorization header
data='{"count": 10, "name": "text"}'
curl http://example.org/endpoint \
--request POST \
--header 'Content-Type: application/json' \
--header "Authorization: Bearer ${JWT}" \
--data $dataTips
Parsing JSON with jq
Further information: jq Turotial
On Arch Linux install the jq. Just pipe the output of cURL into jq
curl 'https://example.org/my/api' | jq '.'Query the result like
curl 'https://example.org/my/api' | jq '.cars[0].color'Get the same result without the quotes
curl 'https://example.org/my/api' | jq --raw-output '.cars[0].color'
