Linux Beginner

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.

Related Terms

A utility for creating and extracting archive files that combine multiple files and directories into a single file.

Redundant Array of Independent Disks — a technology combining multiple physical drives into a single unit for performance, redundancy, or both.

The systemd journal daemon that collects and stores log data from services, the kernel, and boot messages in a structured binary format.

A dynamic firewall management tool for Linux that provides a D-Bus interface for managing firewall rules with zones.

A system and service manager for Linux that initializes the system and manages services, logging, and more.

The time specification format used in cron job scheduling, with five fields defining minute, hour, day of month, month, and day of week.

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