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What is Curl?

A versatile command-line tool for transferring data using various network protocols, commonly used for API testing.

Curl supports HTTP, HTTPS, FTP, SFTP, and many other protocols. It is the go-to tool for API testing: curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' https://api.example.com/endpoint.

Useful flags: -v (verbose), -o file (output to file), -L (follow redirects), -k (ignore SSL), -u user:pass (authentication), -b cookie (send cookies). Curl is installed on virtually every Linux system.

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A command-line interface that interprets user commands and passes them to the operating system for execution.
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A powerful command for searching files and directories based on various criteria like name, size, type, and modification time.
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