Check Supported Protocols in Curl on Linux

Curl is a command line tool that is widely used for interacting with web services, APIs, and for general data transfer tasks. Curl supports various protocols, such as HTTP, HTTPS, FTP, and more. Knowing which protocols your Curl installation supports can be crucial for troubleshooting and ensuring compatibility with the services you need to access. This tutorial explains how to check supported protocols in Curl on Linux.

Run the following command to determine which protocols are supported by your currently installed version of Curl:

curl --version | grep Protocols | tr ' ' '\n'

This command retrieves the version information of Curl installed on the system, filters the output to show only the line containing Protocols, and then converts this line into a list where each protocol is displayed on a separate line. Output example:

Protocols:
dict
file
ftp
ftps
gopher
gophers
http
https
imap
...
telnet
tftp