Curl
curl --head "
https://example.com
"
List contents of a directory
curl --list-only "
https://example.com/foo/
"
Redirect query as specified by a 3xx response
curl --location "
https://iana.org
"
Fail quickly
curl --fail-early "
http://opensource.ga
"
Download a file, saving the file without changing its name
curl --remote-name "
https://example.com/linux-distro.iso
"
Download a file, renaming the file
curl --remote-name "
http://example.com/index.html
" --output foo.html
Continue a partial download
curl --remote-name --continue-at - "
https://example.com/linux-distro.iso
"
Download a file from multiple domains
curl "
https://www.%7Bexample,w3,iana%7D.org/index.html
" --output "file_#1.html"
Download a sequence of files
curl "
https://%7Bfoo,bar%7D.com/file_%5B1-4%5D.webp
" --output "#1_#2.webp"
Download all PNG files from a site (uses GNU grep)
curl
https://example.com
| grep --only-matching 'src="[^"]*.[png]"' | cut -d" -f2 | while read i; do curl
https://example.com/%22$%7Bi%7D
" -o "${i##*/}"; done
Check whether a website is down
curl --head --show-error "
http://example.com
"
Expand a shortened URL
curl --head --location "
https://bit.ly/2yDyS4T
"
Query an API endpoint
curl "
https://gitlab.com/api/v4/projects
"
Send raw data
curl --data "Some data" "
https://example.com/api/v4/endpoint
"
curl --form "username=seth" --form "password=12345678" "
https://example.com/api/v4/endpoint
"
curl --form "avatar=@me.jpg" "
https://example.com/foo/bar
"
Send contents of a file as form data
curl --form "description=<file.md" "
https://example.com/foo/bar
"
curl --header "Authorization: Bearer F66eD5ffXHp2Y" "
https://example.com/api/v4/endpoint
"
Specify HTTP Method
curl --request POST --data "Foo: bar" "
https://example.com/api/endpoint
"
Make an API call to a service
curl --request PUT --header "PRIVATE-TOKEN: your_access_token_here" --data "?per_page=10" "
https://gitlab.com/api/v4/namespaces
"