🎁 New User? Get 20% off your first purchase with code NEWUSER20 · ⚡ Instant download · 🔒 Secure checkout Register Now →
Menu

Categories

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

Netstat
A command-line tool that displays network connections, routing tables, and interface statistics on a system.
Crontab Syntax
The time specification format used in cron job scheduling, with five fields defining minute, hour, day of month, month, and day of week.
Pipe
A mechanism that connects the output of one command directly to the input of another, enabling command chaining.
Chown
A command to change the owner and group of files and directories in Linux.
Linux Kernel Module
A piece of code that can be loaded into the kernel at runtime to extend functionality without rebooting, such as device drivers and filesystems.
Procfs (/proc)
A virtual filesystem in Linux that provides an interface to kernel data structures, exposing process and system information as files.
 View All Linux Terms →