Exec curl bbb/backup/{} --user user:password -Q 'DELE backup/'{} \; How Jun 29, 2011 · I want to have a standalone PHP class where I want to have a function which calls an API through cURL and gets the response. However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure. Services: enabling clients to discover and talk to pods The kubectl exec command allows you to remotely run arbitrary commands inside an existing container of a pod. Mar 23, 2025 · What happened? Health check is failing. Finally, `curl` is typically faster than `docker exec`. to see more go to Chapter 5. com I expect the cURL to return a response like Jul 12, 2025 · It's easier to do GET/POST requests with curl_exec to receive responses from other servers for JSON format data response and to download files. Aug 30, 2024 · Two Ways to Run cURL in Python There are two main approaches to running cURL commands in Python: Use Python‘s built-in subprocess module to execute cURL as a separate command-line process Use a Python library like pycurl or requests that provides a wrapper around libcurl The subprocess method launches cURL as its own process, separate from your Python script. These are to be . This book has given an in-depth elaboration of what curl can do, how it works, and its various applications, highlighting the need for Linux users seeking full command line utility. Dec 19, 2023 · Blog / webscraping How to use cURL in PHP If you're working with PHP and need to get or send data from a website, cURL is the tool you'll need. Depending on its image, a container in a Kubernetes pod may or may not have curl pre-installed. Aug 8, 2020 · I would like to run curl inside a docker image. The curl is a CLI tool that enables data transfer over various network protocols. Learn GET/POST requests, REST API management, multi-requests, data sharing, troubleshooting tips, and more. Here’s how to use it inside a Pod. Let’s see an example of sending commands directly to the operating system: Execute the given cURL session. Nov 1, 2018 · I'm using Go with command to execute curl which works as expected In addition, `curl` is a more versatile tool than `docker exec`. This function must be called after you have initialized a cURL session and set all of its settings. Test APIs with Iplocation Online Curl Client. Here are a few examples to help you understand how to execute different types of curl commands using Python: Example 1: GET request If your curl command is a GET request without Login to get full access to this book. `curl` can be used to send requests using a variety of different methods, while `docker exec` can only be used to send `GET` requests. We’ll look at both scenarios next. Dec 27, 2023 · Curl and kubectl are two powerful command line tools that when combined, provide developers and sysadmins enhanced abilities to test connectivity, APIs, and debug applications running on Kubernetes. io/curlimages/curl www. 2. Can anyone show me how to do a PHP cURL with an HTTP POST? I want to send data like this: username=user1, password=passuser1, gender=1 To www. In this comprehensive tutorial, we will cover step-by-step how to execute curl commands within a kubectl shell to leverage the advantages of both tools. Execute curl_exec Online. gz -mtime +7 -type f -exec rm -rvf {} \; -exec curl -p --insecure ftp://aaa. curl_multi_exec — Run the sub-connections of the current cURL handle curl_multi_getcontent — Return the content of a cURL handle if CURLOPT_RETURNTRANSFER is set With valid certificates there is no need to set VERIFYHOST and VERIFYPEER to false because the curl_exec($ch) method will work and return the response you expect. Apr 11, 2025 · PHP curl_exec function tutorial shows how to execute cURL requests in PHP. Execute curl command in a running container pod 1. Dec 20, 2024 · How to run curl in Kubernetes (for troubleshooting) Curl is a very handy tool for debugging web apps. Connect to a remote telnet server using a command line similar to: Execute Curl commands directly from your browserExecute Curl commands directly from your browser. Here is Nov 28, 2014 · You can do it like so You can easily swap out execSync with exec as in your above example. Installing curl but if you are in control of the command using curl, realize that wget may be pre-installed in the container already, so if you rewrite the curl syntax to use wget instead, the result could be a smaller container image. A cURL handle returned by curl_init (). curl_multi_exec — Run the sub-connections of the current cURL handle curl_multi_getcontent — Return the content of a cURL handle if CURLOPT_RETURNTRANSFER is set Jul 11, 2025 · This book has given an in-depth elaboration of what curl can do, how it works, and its various applications, highlighting the need for Linux users seeking full command line utility. Does someone know what I am doing wrong? I want to access the nginx service I created, from within the pod using curl. And PowerShell also has it’s own methods to transfer data to and Nov 14, 2024 · The command-line tool cURL (client URL) is commonly used to send or receive data to a server. Learn Curl with live Curl examples. Execute the given cURL session. Ideas on how to see what post fields are being sent? Jul 5, 2022 · cURL stands for ‘Client URL Library’ and it allows you to connect and communicate with different types of servers with many different types… May 16, 2025 · cURL is a popular command-line tool for making HTTP requests. It is executing the script from the URL in a subshell. cURL Commands in PHP Here are some cURL commands in PHP. with the URL you want to send the request to. FROM openjdk:8u111-jre-alpine RUN apk upgrade --update && apk add --update libstdc++ curl ca-certificates bash This means that curl is currently installed, right? I run that image inside a Docker compose: podman run -it --rm docker. shell_exec won't yield the errno, you need exec, or proc_open if you want stderr (without 2>&1 intermingling or -f) to recognize request failures. This can be a quick and easy way The first solution (the one using source) did not work at all. Required to "enable" cURL: The cURL, by default, is not enabled in Apache. Feb 19, 2025 · Learn how to use cURL in PHP to fetch web data, handle authentication, work with proxies, and utilize Oxylabs' Web Scraper API for efficient data retrieval. This post will cover how you can use it in your PHP projects. Sep 23, 2014 · I am trying to execute a curl command within a python script. Connect to Kubernetes cluster Learn how to effectively use Java's Runtime. How can I install curl within this pod or container to access the service from inside. Jan 5, 2024 · The following PHP script (when not anonymized) runs successfully at the commandline. You can also include optional parameters, such as headers, query parameters, or request body, depending on your curl command. Dec 18, 2019 · find /var/lib/backup/*. If you have several cURL commands in different places, you can import them into Postman. curl_exec in $response = call ('GET', $query); - even when hasn't completed returns something in response. Aug 31, 2023 · ReqBin Online Curl Client allows you to execute Curl commands directly in the browser, eliminating the need for external tools, and does not require the installation of any browser plug-ins or software on your computer. The same goes for your original command: lose the braces. When testing a web application or API, cURL enables you to interact directly from the command line, using a well-established syntax that’s common in the API developer community. On success, this function flushes the result directly to the stdout and returns true, or false on failure. Run CURL commands online for free, quickly test and debug API requests without installing software. There are four functions in that simple script, which are curl_init (), for initialising the Curl library, curl_setopt (), for setting Curl options, curl_exec (), for executing the Curl query, and curl_close (), for shutting down the Curl system. sql. Jun 20, 2025 · Then execute it in the container interactively and check the return code of the curl command. Learn curl_exec with practical examples. You can execute the curl command inside one of your existing pods through the kubectl exec command. com Running curl seamlessly in container It is possible to make an alias to seamlessly run curl inside a container as if it is a native application installed on the host OS. This guide explores different approaches to execute curl commands directly from within your Kubernetes pod, empowering you to diagnose issues and interact with external services effectively. Command to define curl as an alias for your containerization tool in the Bash, ZSH, Fish shell: Bash or zsh Invoke curl with docker: To run a curl command from a Kubernetes pod, we can use the kubectl exec command. To run the curl command with a --help argument, you should use exec curl --help, no braces. While it's possible to use the libcurl library in JavaScript, there are also other alternatives execute curl execute curl Use this command to set the curl (Client URL). Info and examples on curl_exec PHP Function from Client URL Library - Other Services Nov 14, 2024 · The command-line tool cURL (client URL) is commonly used to send or receive data to a server. I want to make the following curl call in my C# console application: May 28, 2017 · I don't know how to obtain the final response of curl_exec. Looks like curl is not present in image Relevant log output OCI runtime exec failed: exec failed: unable to start container process: exec: "curl": executable Sep 21, 2010 · As far as I can tell, it uses curl_setopt() to set different options like headers and such and then it uses curl_exec() to send the request. If I do it in the terminal, it looks like this: Jul 11, 2025 · Developed by Daniel Stenberg, `curl` provides simple fetching, uploading, and data manipulation through the Internet. I'd gotten exec() to work on something else so that's what i've started with. curl passes all data passed to it on stdin to the remote server. It is working in docker container like this: Jan 5, 2016 · sudo docker exec 71721cb14283 -it '/bin/bash' This doesn't work. Here is the syntax to use: Name curl - transfer a URL Synopsis curl [options / URLs] Description curl is a tool for transferring data from or to a server using URLs. example. This command lets us run commands in a container that is already running. I want to do this to understand the network connectivity. Aug 30, 2019 · kubectl exec -it POD_NAME curl http://localhost:8080/xyz This gives proper output as excepted. It uses curl_init() and curl_exec() to retrieve JSON-formatted data, converts the result into an associative arr Jan 17, 2025 · It's unlikely that exec {curl --help} works, unless you have a command with the unusual name "curl --help". The basic idea behind the cURL functions is that you initialize a cURL session using the curl_init (), then you can set all your options for the transfer via the curl_setopt (), then you can execute the session with the curl_exec (). But when it does, we can readily run curl in it using kubectl exec. The tool’s advantage is that it supports multiple protocols and offers features like authentication, proxy, transfer resume, and more. Any help with this Update: But when I run interactive (kubectl exec -it curl_exec will return false when the request failed. Dec 20, 2023 · Code explanation: - curl_init: initialize the curl - curl_setopt: any option or setting for this curl request - curl_exec: To execute the curl - curl_close: closing the connection This will be the default template when running a cURL in PHP. Here i hide the token, If i use the url only in my browser then it returns the data but here its null. Your code already contains this line (which is good): Is there a way to install cURL in Windows in order to run cURL commands from the command prompt? The PHP Client URL curl_exec () function is used to execute the given cURL session. This function should be called after initializing a cURL session and all the options for the session are set. But except mysql every thing else stays unhealthy but I don't know why. curl is powered by libcurl for all transfer Jan 25, 2024 · We can execute curl commands from Java by using the ProcessBuilder — a helper class for building instances of the Process class. Of course, if it doesn’t have curl, it can’t run curl commands. 0. Sure, I'll list some common cURL settings in PHP for different types of requests. exec () method to run CURL commands, common pitfalls, and troubleshooting tips. Mar 18, 2024 · In this tutorial, we’ll see how to run curl from within a Kubernetes pod. The curl communicates with a web server or application server by specifying a relevant URL and the data that need to be sent or received. Adjust your function to this : Mar 23, 2015 · I have a problem to get the data using curl operation. 2, PHP 5) curl_exec — 执行一个cURL会话 说明 mixed curl_exec ( resource $ch ) 执行给定的cURL会话。 The curl telnet support is basic and easy to use. Nov 13, 2024 · Learn how to automate Terraform infrastructure deployments by leveraging the power of cURL to interact with the Terraform REST API. We can also use cURL in PowerShell, but there are a few important things that you need to know. Mar 6, 2025 · Master PHP cURL with this expert blog. PHP curl_exec函数 PHP cURL参考手册 (PHP 4 >= 4. I have some functions defined in the script that I would like to use in the parent. And PowerShell also has it’s own methods to transfer data to and Dec 13, 2023 · If you like cURL and use JavaScript (Nodejs) daily, you might wonder how to use cURL into your JavaScript programs. From the manual: Returns TRUE on success or FALSE on failure. Overview of cURL […] Jul 23, 2025 · The curl command becomes your trusty companion in these situations. Jul 3, 2019 · sh+curl are the two processes forked. So I was adding health checks to my containers. The second worked somewhat but has its limitations. 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? Nov 20, 2023 · A guide on executing a curl command in Python. Dec 1, 2020 · I'm currently working on a microservice project using docker-compose. echo $? 0 and 1 should be used: Docker Documentation – 15 May 25 Feb 16, 2013 · @John, i'd be happy to use PHP's curl() i just wasn't sure how to do that either. 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. Can someone help me in this? Thanks. Jul 11, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. Could you provide an answer using curl()? Feb 18, 2022 · The kubectl exec command allows you to remotely run arbitrary commands inside an existing container of a pod.