Curl a url. com receiving an HTML object as a response.
Curl a url This command is a simple GET request that retrieves the content of the web page and displays it in the terminal. May 19, 2024 · curl is already available in newer versions of Linux distributions. Instead of: What is cURL Command? cURL (Client URL) is a command-line utility that enables data transfer to or from a server without user interaction, leveraging the capabilities of the supported libcurl library. See why 850,000 users use ReqBin online Curl Client for testing their APIs online! CURLU_URLENCODE This flag makes curl_url_get() URL encode the hostname part when a full URL is retrieved. With the curl command, you can make simple and complex requests to the server to access the necessary information. Apr 16, 2024 · The simplest cURL command you can make is curl [URL]. h> CURLU * curl_url (); Description This function allocates a URL object and returns a CURLU handle for it, to be used as input to all other URL API functions. curl supports over two hundred different options. It's not a wget clone! Find out what it can do and when you should use it. The terminal was transparently translating the [colour\codes]some_string [colour\codes] into the expected no-special-characters URL when viewed in terminal, but behind the scenes the colour codes were being sent in the URL passed to curl, resulting in brackets in your URL. URL is, strictly speaking, the former name for these. Besides the HTTP (S) protocol, many other network protocols are supported, like FTP, IMAP, LDAP, and SMB. This guide covers basic cURL commands and examples to help you get started. As you follow these instructions, keep in mind that your computer’s files and folders likely Jan 31, 2025 · Upload files with ease using CURL. This in-depth guide will teach you how to fully utilize curl with examples of […] How to download files with curlHow to download files with curl Table of contents Introduction Prerequisites Downloading a file Save with the filename from the URL Save with a different filename Wrapping up Introduction This guide is intended to teach you the basic ways to download files using curl. 0-2ubuntu3. There are two main ways to do that: with xargs, or with command substitution. In the name cURL, c stands for Client and URL indicates curl works with URL’s. Curl runs on 92 operating systems and has over 20 billion installations worldwide. According to the URL specification, HTTP URLs can not contain a user and password, so that style does not work when using curl via a proxy, even though curl allows it at other times. When spaces are allowed, they are still not allowed in the scheme. In this guide we’ll focus on the curl command for get request patterns you use every day. Like you can ask curl to switch on verbose mode with the -v To help users create such query sets, properly encoded, curl offers the command line option --url-query [content]. The basic syntax is: curl [options] [URL] For example, to GET a list of users Nov 7, 2024 · The Linux curl command supports numerous protocols for data transfer to and from a server. How to Use Curl for HTTP Requests I have built 2 REST API Endpoints using NodeJS. When the object is first created, there is of course no components stored. Name libcurl-url - URL interface overview Description The URL interface provides functions for parsing and generating URLs. Our step-by-step guide shows you how to do it quickly and efficiently. Command line options When telling curl to do something, you invoke curl with zero, one or several command-line options to accompany the URL or set of URLs you want the transfer to be about. Whether you‘re testing a new API, automating scripts, or just exploring responses, cURL is a great tool to have in your developer toolkit. In this article, we will be calling the GET and POST endpoints using Curl. To add additional HTTP headers, use the -H command line option. It helps users to transfer data across different network types, interacting directly with servers to download files, submit requests, and inspect web resources. curl is a command-line tool for transferring data, and it supports about 22 protocols, including HTTP. Learn how to use curl by reading the man page or everything curl. Furthermore, we can find curl in the repositories of most distributions. It’s pre-installed on many Linux distributions. It is highly popular for automation and scripts due to its wide range of features and protocol support. Bonus Outside of making general web requests curl is great for debugging and troubleshooting web application servers and APIs. Curl automatically selects the HTTP GET request method unless you use the -X, --request, or -d command-line option. libcurl also boasts features like SSL support, proxy tunneling, header configuration, and cookie management. somesite. Nov 14, 2024 · The command-line tool cURL (client URL) is commonly used to send or receive data to a server. Short options Command line options pass on information to curl about how you want it to behave. Jun 26, 2022 · I have a "testing. Jul 23, 2025 · Curl is a command-line tool for making web requests, often used directly from the terminal. Usage curl [url] Make and receive web requests. Mar 22, 2021 · Name curl - transfer a URL Purpose To craft HTTP(s) requests and receive HTTP(s) responses allowing transference of data to or from a server. Further Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. If you are working as a developer or in the support function, you must be aware of cURL command usage to troubleshoot web applications. Nov 7, 2023 · cURL is a powerful command-line tool for transferring data using various network protocols. Sep 26, 2025 · Complete intro to how to use curl get requests with curl headers, curl authentication. pem https://localhost:8443/baeldung 4. tech fetches IP address details in JSON format, just like visiting the site in a browser. This is a handle to a URL object that holds or can hold URL components for a single URL. If your shell or command-line system supports it, there is really no limit to how long a command line you can pass to curl. I used to use curl command in terminal to access a php web page to test some APIs in the web page. curl is a command line tool for doing all sorts of URL manipulations and transfers, but this particular document focuses on how to use it when doing HTTP requests for fun and profit. c (line 4337 in verion 7. It's a versatile tool for downloading files, testing APIs, and more. URL syntax and their use in curl Specifications The official "URL syntax" is primarily defined in these two different specifications: RFC 3986 (although URL is called "URI" in there) The WHATWG URL Specification RFC 3986 is the earlier one, and curl has always tried to adhere to that one (since it shipped in January 2005). What is cURL cURL is basically used to transfer data using Internet Protocols for the given URL. One of the most versatile and powerful tools for this purpose is cURL. Include You still only include <curl/curl. cern. h> in your code. txt) Both methods mangle some special characters, but given what characters are valid in URLs, this shouldn Previous chapters described curl concepts and something about the basic command lines. This page explains how to download file with curl command on a Linux, macOS, *BSD and Unix-like operating systems. curl is powered by libcurl for all transfer May 26, 2025 · Learn how to download files using cURL from the command line. I don't need to do anything with the data, I just need to replicate hitting refresh 20 times in a browser. Essentially, Curl prints the web response to the terminal. How can I call the web service in Linux with cURL? curl is a command line tool for doing all sorts of URL manipulations and transfers, but this particular document focuses on how to use it when doing HTTP requests for fun and profit. com Make an HTTP GET request, follow any 3xx redirects, and dump the reply headers and contents to stdout: curl [-L | --location] [-D | --dump-header] - https://example. URL top The URL syntax is protocol-dependent. In this article, we explain what is the curl Sep 12, 2024 · This guide will walk you through different methods to execute bash scripts directly from URLs. In this guide, Dec 16, 2024 · Explore 20 essential curl commands for developers and sysadmins. Nov 19, 2024 · In this beginner‘s guide, we‘ll cover the basics of using cURL effectively. May 21, 2020 · Curl is a command-line tool for accessing internet resources, retrieving data, and saving it to files directly from your terminal. curl is powered by libcurl for all transfer Oct 9, 2025 · cURL is a powerful command-line tool for transferring data with URLs. What the curl tool can do and how to tell curl to use these features to send or retrieve data for you. […] Oct 24, 2023 · The curl command line tool is used by developers, sysadmins, and power users to transfer data to and from servers. " curl assumes you want FTP. The article also introduces practical examples for downloading files, interacting with APIs, and automating uploads to enhance command-line proficiency. Oct 15, 2025 · Client URL or cURL is a data transfer tool in Linux that can make different kinds of requests from the client side to any remote server. curl parses the entire command line first, apply the wishes from the command-line options used, and then go over the URLs one by one curl(1) Curl Manual curl(1) NAME curl - transfer a URL SYNOPSIS curl [options] [URL] DESCRIPTION curl is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET and TFTP). In this tutorial, we will show you how to use the curl tool through practical examples and detailed explanations of the most common curl options. Test APIs, websites, and web services and validate server responses without installing additional software or plugins. a script to set the username Nov 18, 2008 · 699 Use curl --data-urlencode; from man curl: This posts data, similar to the other --data options with the exception that this performs URL-encoding. curl lets you use that as a shortcut so you do not have to repeat it with -o. Jun 30, 2024 · Learn how to start using cURL for transferring data with URLs. You can specify any amount of URLs on the command Feb 1, 2024 · Introduction cURL is a versatile tool and library (libcurl) that is used to transfer data with URLs. The curl project has Apr 20, 2024 · Then we’ll use the server certificate in the curl request along with the –cacert option: curl --cacert baeldung. se/dlwiz/. You use command-line options and you pass on URLs to work with. The tool’s advantage is that it supports multiple protocols and offers features like authentication, proxy, transfer resume, and more. Learn how to use this versatile tool for advanced connectivity testing and troubleshooting. Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. cURL Command-line Options The cURL command supports a vast array of command-line options, providing flexibility for various tasks. It works fine. It covers installing `curl` on various distributions, basic commands, and practical usage for developers, system admins, and tech enthusiasts. In case, if you get curl command not found, you can easily install it using the system's If you check curl source code, you will see at url. For example: curl www. 24_amd64 NAME curl - transfer a URL SYNOPSIS curl [options] [URL] DESCRIPTION curl is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP). Create Create a handle that holds URL info and resources with curl_url: CURLU *h = curl_url (); Cleanup When done with it, clean it up with curl_url_cleanup curl_url_cleanup (h); Duplicate When you need a copy of Many options and URLs As mentioned above, curl supports hundreds of command-line options and it also supports an unlimited number of URLs. Curl supports the most widely used internet protocols including HTTP, HTTPS, FTP, SFTP, SCP, SMTP, POP3, IMAP, MQTT, LDAP and more. Jul 14, 2023 · To make a GET request using Curl, run the curl command followed by the target URL. Its flexibility and extensive options In this article, we will explore how to use cURL in Python, particularly using it to make HTTP requests, and provide examples that showcase its features and practical applications. cURL, short for ‘Client for URLs’, is a command line tool and library for transferring data with URLs. This duo specializes in data transfer with URL syntax across a spectrum of network protocols. Find out how to install curl by reading Jun 14, 2022 · This guide outlines the most popular curl examples, along with a description of what each command does. Dec 12, 2024 · Learn how to effortlessly download files with cURL. We can also use cURL in PowerShell, but there are a few important things that you need to know. Learn more. The curl command is one of the most powerful and useful tools that are used by web developers What is Curl? Curl is a command line tool that transfers data using various network protocols. gz Provided by: curl_7. The second worked somewhat but has its limitations. With its rich feature set and versatility, curl is May 17, 2024 · The cURL tool is a well-known tool for transferring data across networks, based on the libcurl library. With over 25 million estimated downloads per year, curl is likely the most widely used data transfer tool in the world. I have some functions defined in the script that I would like to use in the parent. Jan 17, 2025 · cURL is a command-line tool to get or send data using URL syntax. Feb 7, 2025 · Interacting with web services and APIs is a vital skill for developers, system administrators, and anyone who needs to retrieve data from the internet. If not set (default), libcurl returns the URL with the hostname "raw" to support IDN names to appear as-is. Making GET Requests The simplest cURL command makes a GET request to retrieve data from a server. How to use curl to retrieve any page and handle URL params curl is a command-line tool for transferring data from or to a server using URLs. And PowerShell also has it’s own methods to transfer data to and Feb 10, 2024 · The Linux curl command is flexible and powerful. One endpoint supports GET request and the other endpoint supports POST request. The name stands for "Client URL" as it was originally designed to client-side URL transfers. Learn how to use Curl for HTTP requests, data retrieval, and more. If you request a In this article, learn the basic curl command and its most useful options. You can specify any amount of URLs on the command Feb 22, 2025 · The curl command-line tool is one of the most useful and versatile programs you can learn. Learn how to use curl and its options. cURL is a computer software project providing the libcurl library and curl command-line tool for transferring data such as downloads and uploads using various network protocols. It supports a wide range of protocols including HTTP, HTTPS, FTP, and more. For example, asking for an HTTP document on port 8080: curl - Man Page transfer a URL Examples (TL;DR) Make an HTTP GET request and dump the contents in stdout: curl https://example. cURL is a cross-platform utility means you can use on Windows, MAC, and UNIX. Example Make a curl request to google. It supports numerous protocols including HTTP, HTTPS, FTP, and many more. com i want to curl that url by using this command curl $testing. This guide covers syntax, authentication, HTTP/FTP downloads, headers, and resume tips. With xargs: xargs <urls. 1. ba3a. Apr 25, 2025 · The curl command (client URL) is a command-line tool for transferring data to or from a server. In this article, we will learn how to make REST API requests using Curl. In this article, you will learn how to use curl in Windows with various examples Mar 26, 2025 · This tutorial gives a brief overview of testing a REST API using curl. The project consists of a library (libcurl) and command-line tool (curl), which have been widely ported to Nov 27, 2019 · Curl is a command-line utility for transferring data from or to a server designed to work without user interaction. ` -G, --get Put the post data in the URL and use GET` No, it just adds the post data to the url, -X [method] takes precedence (source: curl --help and experience) How can this be so convoluted. URL is the name we casually use for the web address strings, like the ones we usually see prefixed with HTTP:// or starting with www. What started as a simple way to get currency exchange rates has evolved into one of the most versatile networking tools available today. This option adds content, usually a name + value pair, to the end of the query part of the provided URL. Verify if you can connect to the URL curl is a tool to transfer data from or to a server, using one of the supported protocols (HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP or FILE). This cheat sheet will guide you through its most common commands. The cURL command in Linux enables your system to exchange data with servers via the internet. The target URL is passed as the first command-line option. 39) they check for lowercase version and if they can't find it, check for the uppercase. Then, you can begin using cURL to test your endpoints and troubleshoot your applications. . g. Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. curl is also libcurl, used in cars, television sets, routers, printers, audio equipment, mobile phones, tablets, medical devices, settop boxes, computer games, media players and is the Internet transfer engine for countless software applications in over twenty billion installations. Sep 4, 2023 · Curl by example: Interactive guide Curl (c lient for URL s) is a tool for client-side internet transfers (uploads and downloads) using a specific protocol (such as HTTP, FTP or IMAP), where the endpoint is identified by a URL. NET on Windows that provides a web service. IDN hostnames are typically using non-ASCII bytes that otherwise are percent-encoded. 58. In this chapter, we are going to dive deeper into doing actual transfers with curl. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. txt" file that has this following string example. What is cURL cURL is a free and open-source command line tool and library for transferring data with URLs. com -d parmetername=value Now this page has basic Sep 7, 2023 · This page contains a comprehensive curl command-line reference and guide based on the Mastering the Curl Command Line master class as well additional usage notes and examples on using curl. haxx. It operates on URLs. Learn Curl with an extensive database of handpicked Curl examples. This tool is essential for various tasks Apr 26, 2025 · The first URL accesses every 5th file in the range, while the second URL accesses every second letter in the range. Explore the power of cURL to test server connectivity in your Linux environment. It then defaults to HTTP but assumes others based on often-used host name prefixes. When space is used and allowed in a URL, it is stored as-is unless CURLU_URLENCODE is also set, which then makes libcurl URL-encode the space before stored. Conclusion In this tutorial, we described how to invoke an HTTPS endpoint using the curl tool. Sep 13, 2012 · Whats the syntax for a linux command that hits a URL repeatedly, x number of times. The syntax is May 20, 2025 · What is curl and Why Should You Care? curl (which stands for "Client URL") is a command-line tool created by Daniel Stenberg in 1998. The WHATWG URL spec was written later, is incompatible with the RFC Nov 22, 2025 · cURL is a lightweight command-line tool and “client url” that lets you run HTTP commands from any terminal. Discover advanced commands, handle proxies, resume interrupted downloads, and simplify automation. Name curl_url - create a URL handle Synopsis #include <curl/curl. In this tutorial, we’ll learn how to use the curl command Convert curl to URL. From GET requests to file uploads and HTTP headers, this guide covers practical examples to enhance your command-line skills. com receiving an HTML object as a response. Port number Each protocol has a default port number that curl uses, unless a specified port number is given. cURL can be Jan 28, 2025 · Learn how to use cURL to download files from HTTP/HTTPS servers, follow redirects, handle multiple downloads, and manage file names efficiently. Using this, you can make the curl requests(s) use a specified address and prevent the otherwise normally resolved address to be used. cURL is widely used by developers and system administrators for testing APIs, automating file downloads and uploads, debugging network issues, and scripting complex data transfers. The command is designed to work without user interaction. Curl is a Client side program. Its versatility and comprehensive HTTP implementation mean that, if there’s a URL for it, curl can do it. bionic (1) curl. The command is Sep 29, 2019 · This article explains how to use curl in Linux with 15 examples. This affects how the URL is constructed when curl_url_get() is subsequently used to extract the full URL or individual parts. ch What you see will depend on the content type of the URL. It can download a URL from a web server over HTTP, and supports a variety of other network protocols, URI schemes, multiple versions of HTTP, and proxying. Discover a handful of the tools that are available to help you get started with cURL. Is there anyway to achieve that? Or am I out of luck and the only solution is to copy that script in a temporary file and then source it? I have a server application written in ASP. Start uploading your files today! Sep 15, 2023 · Discover the basics of the Curl command in our beginner's guide. txt curl … With command substitution: curl … $(cat urls. Oct 9, 2025 · curl (short for “Client URL”) is a lightweight yet powerful command-line tool for transferring data across URLs. URI (Uniform Resource Identifier) is the more modern and correct name for them. txt and i expect to get this output Curl Cheatsheet cURL is a powerful and versatile command-line tool for transferring data with URLs. The HTTP POST method is used to send data to the remote server. Feb 10, 2023 · Learn how to use curl to make quick and easy REST API requests from the command line in this beginner-friendly guide. Oct 21, 2022 · Curl (client URL) is a command-line tool powered by the libcurl library to transfer data to and from the server using various protocols, such as HTTP, HTTPS, FTP, FTPS, IMAP, IMAPS, POP3, POP3S, SMTP, and SMTPS. It supports nearly every protocol you can think of—HTTP, HTTPS, FTP, SCP, SFTP, and more. curl Nov 15, 2018 · If Curl is not there in your system you can install it from this URL https://curl. One could assume --data-urlencode adds the data to the URL with no exceptions but now you need to combine it with --get to make it actually work. Using the curl Command The curl command is used to transfer data from or to a server using various protocols like HTTP, HTTPS, FTP, and more. The most common way developers use it is with a curl get command, a powerful tool for retrieving data from web servers over HTTP and other protocols. The following are some of the most used syntaxes with an example to help you. May 9, 2016 · If I understand correctly, you have a file containing a list of URLs (one per line), and you want to pass those URLs to CURL. 8 Fetch a Web Page In its most basic form, curl fetches a URL and displays its contents on your terminal: curl info. curl is powered by libcurl for all transfer Jul 11, 2025 · Syntax of curl Command curl [options] [URL] Here, [options]: Can be various command-line flags that modify the behavior of curl [URL]: Specifies the location from which to fetch or send data. Please clone the NodeJS code into your local from this github Oct 31, 2012 · Here is the man entry for the currently most upvoted answer since they only included a link to the programmatic component: --resolve <host:port:address> Provide a custom address for a specific host and port pair. If you provide a URL without a leading protocol:// scheme, curl guesses what protocol you want. They Jan 8, 2025 · Explore how to send GET requests with cURL. It supports a variety of protocols, including HTTP, HTTPS, FTP, and more. You find a detailed description in RFC 3986. cURL in one such tool 😄 In this article I will explain how curl can be used to make HTTP requests. Feb 2, 2024 · In this tutorial, we are going to dive into using cURL to download files from the internet. For example, curl -L ip. May 17, 2021 · cURL (client URL) is a command line tool that can be used to transfer data from a server. To be CGI-compliant, the <data> part should begin with a name followed by a separator and a content specification. With its capabilities for interacting with APIs, web services, and servers, cURL can be an invaluable tool for Windows and PowerShell users. Mar 16, 2025 · Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. At its simplest, you specify a URL and the data to send or receive. Let’s explore 20 essential tips that will help you become proficient with cURL. Additionally, cURL can be utilized as a troubleshooting tool to diagnose and resolve connection-related issues. The optional port number can be provided within the URL after the hostname part, as a colon and the port number written in decimal. It supports many protocols, including HTTP, HTTPS, and FTP, and runs on most operating systems. Sep 13, 2023 · Use curl to interact with websites directly from your command line. It is often used by developers to test web applications. This combination makes it a very good ad-hoc tool for testing our REST services. It is executing the script from the URL in a subshell. Nov 21, 2018 · Every developer needs to know a bunch of tools to be effective. This comprehensive guide explores the essentials of using `curl` for data transfer on Linux. For example, for host names starting with "ftp. Feb 18, 2025 · The curl command line utility lets you fetch a given URL or file from the bash shell. com Download a file, saving the output under the filename indicated by the URL: curl [-O | --remote curl is used in command lines or scripts to transfer data. In this comprehensive guide, we‘ll cover everything you need to know to get started with cURL on Windows and PowerShell. This guide details the simple steps with typical scenarios like passing parameters, headers, and JSON responses. The first solution (the one using source) did not work at all. Consider it a sort of /etc/hosts alternative Convert cURL commands to HTTP code easily using this utility, compatible with Google Chrome DevTools for seamless integration. Below are some of the most commonly used options. The Syntax and Options of cURL Aug 31, 2023 · Run, save, and collaborate Curl commands directly from your browser. Why is curl So Popular in Linux? It's installed by default on the majority of Linux distros such as Ubuntu, Debian, CentOS, etc. curl is powered by libcurl for all transfer URLs curl is called curl because a substring in its name is URL (Uniform Resource Locator). Dec 28, 2023 · This article explains how to use curl to make POST requests. A similar problem arises if using environment variables with e. Download to a file named by the URL Many URLs, however, already contain the filename part in the rightmost end. -s or --silent: This option runs the command in the background silently, without displaying Dec 17, 2024 · The curl command-line tool is an essential utility for network interaction and data transfer, catering to a variety of communication protocols including HTTP, HTTPS, FTP, and more. This curl method keeps credentials out of the history and process status, but leaves username and password in cleartext in the my-password-file creating another attack vector - worse than than having info in the history file: bash, for example, automatically restricts permissions of the history file. cURL (pronounced like "curl", [6] / kɜːrl /) is a free and open source CLI app for uploading and downloading individual files. URL will be ready to run curl command online and with residential proxies. Example usage: Jul 29, 2024 · cURL, short for “Client for URLs,” is a software project encompassing a command-line tool and a library called libcurl. tyfcfcbwlqmqifjbszcugmewpgqkdptulcpglahifeucpwjiovvnxhurdmvosnkflolfoigfqcotpnpl