This article explains how to bypass kubectl and interact directly with the Kubernetes API using curl or any programming language, covering API discovery, request construction, resource listing, watching, and modifying objects, while illustrating concepts with JavaScript examples and shared informers.
The article recounts curl creator Daniel Stenberg's celebration of the project's 25th anniversary, highlighting its evolution from a modest URL client to a ubiquitous command‑line tool supporting dozens of protocols, with over 10 billion installations and a vibrant open‑source community.
The article recounts the 23.9‑year‑long curl vulnerability discovered by Daniel Stenberg, detailing the early implementation of cookie handling, the challenges of dual cookie syntax, the security bug involving control‑code cookies, and the eventual fix released after nearly nine thousand days.
This guide explains how to use Python's httpx library and the curl command‑line tool to perform comprehensive HTTP/HTTPS testing—including basic requests, chunked transfers, HTTP/2, SSL/TLS configuration, and dynamic DNS resolution—complete with code examples and setup instructions.
cURL 7.87 has been officially released, introducing new command‑line options such as -url-query, enhancements like quick‑exit and CA cache timeout, expanded version‑info feature names, and a long list of bug fixes covering base64 handling, locale‑independent parsing, FTP, WebSocket, TLS‑proxy support, and more.
Git for Windows 2.39.0‑rc2 introduces updated components, new SSH key generation support, simplified color settings, and fixes version‑info and container‑compatibility bugs, providing a more secure and functional Git experience on Windows platforms.
Our operations team faced alarming memory usage over 90% on several load‑balancer nodes, traced the surge to a dentry leak in curl‑7.19.7’s NSS library, and resolved it by disabling the probing script, clearing caches, and setting the NSS_SDB_USE_CACHE environment variable, while also reviewing Linux memory management concepts such as paging, NUMA, and slab allocation.
This article explains why a trailing dot appears in DNS names, how fully‑qualified domain names (FQDNs) are encoded, the role of zone files and search domains, and when tools like dig, curl, or system resolvers add or omit the dot.
This guide compiles essential Linux and Windows commands—including wget, curl, PowerShell, and Netcat—that enable attackers to download files to compromised hosts when direct transfer is unavailable, covering usage, options, and practical examples for each tool.
The author describes receiving a paid PHP development request, quickly implementing a cURL‑based HTTP client class to handle GET, POST, PUT, and DELETE requests with JSON payloads, and shares the full code to help others solve similar integration problems.
This article provides a detailed tutorial on the curl command-line tool, covering its purpose, common options such as -A, -H, -b, -c, -d, -F, -L, -k, and advanced usage like file uploads, proxy settings, and response testing, with practical code examples for each.
Learn how to use Prometheus's stable V1 API to query instant and range data, handle responses and errors, and fetch metrics programmatically with curl and Python, enabling data analysis, cost management, and advanced monitoring beyond basic alerts.
This article recounts the 23.9‑year lifespan of a curl cookie handling vulnerability, tracing its origins in 1998, the evolution of cookie specifications, the discovery of the CVE‑2022‑35252 bug, and the eventual fix that finally eliminated the flaw after nearly 9,000 days.
The article recounts how a flaw introduced in curl 4.9's cookie engine in 1998 persisted for 23.9 years, why the dual‑syntax cookie RFC caused confusion, how the bug allowed control‑character cookies to be sent, and how a simple reject‑bytes patch finally fixed CVE‑2022‑35252.
This guide shows how to enable the PHP cURL extension and provides complete code examples for performing HTTP GET, POST, file upload, and flexible request operations using cURL functions in PHP.
The article discusses the difficulties faced by open‑source maintainers, highlighting a recent conflict where Apple redirected a user to the Curl project for support, prompting founder Daniel Stenberg to criticize the lack of corporate contribution and the broader sustainability issues of volunteer‑driven software.
This guide explains why home broadband users need to discover their dynamic public IP, compares browser, cURL, and dig methods for fetching it, and provides a Bash script that intelligently falls back between multiple services to ensure reliable IP retrieval for DDNS and other network tasks.
Learn how to accurately determine your ISP‑assigned public IP address using simple shell commands, online services, and a robust Bash script that falls back between dig and curl with random host selection, ensuring reliable results for home‑based services and DDNS updates.
This tutorial demonstrates how to register for Baidu AI, obtain an AccessToken, and use a custom PHP Curl wrapper to call the Baidu image‑to‑anime API, converting a regular photo into an anime‑style avatar, with full code examples.
cURL author Daniel Stenberg announced plans to add native JSON handling, explaining its importance for REST APIs, the common pain points developers face, and introducing two new command‑line options that simplify sending JSON payloads and headers.
cURL’s creator Daniel Stenberg plans to add native JSON handling with new command‑line options that streamline sending JSON payloads and headers, addressing common REST API usage, user convenience, and shell quoting challenges.
This roundup covers curl founder Daniel Stenberg’s criticism of Apple’s reliance on open‑source tools, Docker’s new subscription model, Windows 11’s return to the classic blue crash screen, key findings from GitHub’s 2021 Octoverse report, and the debate over OpenSearch as a cloud‑native alternative.
This guide introduces Transfer.sh, a fast, encrypted command‑line file‑sharing service supporting up to 10 GB, with instructions for uploading, encrypted uploads, downloading, virus‑total scanning, and setting limits on downloads and retention time for your projects.
This article demonstrates how to set up a GitLab CI pipeline trigger token, use curl or Postman to invoke the pipeline via API, embed the trigger in .gitlab-ci.yml, and pass custom variables to the job, with example scripts and best‑practice tips.
This tutorial explains HTTP fundamentals, shows how to install and configure the Jenkins Generic Webhook Trigger plugin, and demonstrates parsing GET, POST, and header parameters using curl, Postman, and Jenkinsfile Groovy scripts for automated CI/CD pipelines.
This article introduces the Python filestools library, demonstrating how to install it and use its four core utilities—tree‑style directory listing, text file diff comparison, image watermarking, and converting cURL commands to requests code—complete with command‑line and Jupyter examples.
This article investigates how high system load affects libcurl's DNS resolution time and overall HTTP request latency, explains the three timeout error types returned by libcurl, presents experiments comparing host‑based, system‑host, and async‑ares resolution methods, and offers optimization recommendations.
This tutorial explains how to install and use the curl and wget command‑line tools on Ubuntu (and other Linux distributions) to download single or multiple files, rename them, handle FTP sources, and pause or resume transfers efficiently.
This guide compares curl and wget, highlighting their overlapping features and key differences—curl excels at customizable web requests while wget shines in recursive and FTP downloads—plus provides practical command examples for downloading, renaming, resuming, rate‑limiting, viewing headers, and mirroring sites.
This guide explains several methods to obtain your public IP address directly from a Linux terminal—using curl, wget, or DYNDNS services—and provides example commands, JSON/XML outputs, and a simple Bash script for automation, useful for headless servers and command‑line users.
This article explains how to transform a Java HttpRequestBase object into an equivalent curl command, enabling rapid request replay across servers and detailed timing analysis, and demonstrates the process with step‑by‑step code examples and a functional test using the FunTester framework.
This article explains how to capture browser curl requests, parse them into Java HttpRequestBase objects, and run high‑concurrency performance tests using a custom FunTester framework, complete with code examples, metrics, and repository links.
This guide provides a concise reference of curl's most useful command‑line options, explaining how to customize headers, handle cookies, send data, manage redirects, control output, and debug requests for efficient web and API interactions.
This guide provides a concise reference of curl's most useful command‑line options, explaining how to set headers, handle cookies, send data, control redirects, limit bandwidth, and debug requests, enabling developers and operators to replace GUI tools with a powerful terminal utility.
This guide explains how to use curl for sending GET, POST, and other HTTP requests, covering headers, data payloads, authentication, file uploads, and submitting data from files with clear command examples.
This guide shows how to use curl's --resolve option to force a specific IP address for a domain during HTTP or HTTPS requests, avoiding hosts file changes, DNS cache flushing, and the need to edit system configurations.
This article explains how to achieve asynchronous processing in PHP by using non‑blocking socket connections, ajax calls, popen, curl, and fsockopen, providing code examples and discussing their advantages and limitations for backend development.
This article introduces cheat.sh, a lightweight command‑line cheat sheet that covers over 58 programming languages, numerous DBMS, and more than a thousand Unix/Linux commands, and explains how to query it with curl, use its CLI client, shell and stealth modes, and integrate it with popular editors.
This article provides PHP functions that demonstrate how to perform HTTP GET, POST, and JSON‑encoded POST requests using cURL, including error handling, timeout settings, SSL options, retry logic, and a usage example for calling an API.
This article introduces Elasticsearch as a Lucene‑based distributed search engine and demonstrates how to use curl commands to create, read, update, and delete documents and indices, providing step‑by‑step examples with command‑line output and screenshots.
This guide provides a concise reference of curl’s most commonly used command-line options—including setting user agents, handling cookies, sending POST data, uploading files, managing redirects, limiting bandwidth, and debugging—offering developers a quick cheat‑sheet to replace graphical tools like Postman.
This article teaches how to install and use wget and curl on Linux to download single files, multiple files, directories, or whole websites, covering custom filenames, recursive retrieval, mirroring options, and how to resume interrupted downloads.
After adding an HTTPS certificate to a website, browsers load fine but curl requests are reset; this article chronicles the troubleshooting steps—examining network ports, cipher suites, client buffers, SSL session cache settings, and common Nginx error logs—to pinpoint and resolve the underlying cause.
After setting up an ES cluster, this guide shows how to use cURL to inspect node and master status, query cluster health, perform CRUD operations, manage indices, execute bulk actions, and run multi‑search queries, complete with example commands for both Kibana and Bash.
This article explains how to implement Apple In‑App Purchase receipt verification in a PHP backend, covering required Apple documentation, the verification workflow, detailed PHP code for handling production and sandbox environments, and how to record successful transactions in the database.
This article reviews eight PHP web‑scraping libraries—Goutte, Simple HTML DOM, htmlSQL, cURL, Request, HTTPful, Buzz, and Guzzle—detailing their features, requirements, licensing, and documentation to help developers choose the right tool for their backend data‑extraction projects.
This guide walks you through practical cURL commands on Linux, covering file downloads, redirects, resume support, timeout settings, form submissions, email handling, and key differences from wget, all illustrated with clear examples and screenshots.
This tutorial provides a comprehensive guide to using the cURL command-line tool on Linux, covering basic file downloads, following redirects, resuming interrupted transfers, setting timeouts, authentication, proxy usage, range requests, silent mode, header manipulation, data uploading, email sending, and a comparison with wget, all illustrated with practical examples and code snippets.
This article walks through a real‑world Nginx HTTPS troubleshooting case where curl requests are reset, detailing packet captures, configuration tweaks, SSL session cache settings, and a comprehensive list of common Nginx error messages to help engineers quickly locate and resolve similar issues.
This comprehensive guide walks you through the core features of the cURL command-line tool, covering file downloads, redirects, resumable transfers, timeouts, authentication, proxy usage, chunked downloads, silent mode, header manipulation, and both uploading files and sending or reading emails.
This article provides a comprehensive overview of the curl command-line tool, detailing its purpose, basic syntax, frequently used options, and practical examples for file downloading, uploading, and HTTP request testing, helping readers effectively leverage curl for network and data transfer tasks.
Discover the ten indispensable tools—from Chrome and Charles to cURL, Postman, and JSON editors—that streamline Python web scraping, help analyze target sites, bypass anti-scraping measures, and boost efficiency for both beginners and advanced developers.
This article chronicles the history of cURL, its creator Daniel Stenberg, the reasons behind its open‑source, free licensing, the global community that sustains it, and the personal motivations that keep the project thriving after two decades of development.
This guide shows how to configure a .curlrc file and use cURL’s timing variables to capture DNS lookup, connection, TLS handshake, transfer start, total time, and download size, enabling precise performance analysis of web requests.
This article presents ten practical Unix command-line habits—including file name completion, history expansion, directory stack navigation, large‑file searching, temporary file creation, curl usage, regular‑expression tips, user identification, and awk data processing—each illustrated with clear examples and commands to help users work faster and more efficiently.
This guide shows how to use PHP's cURL functions to post data to a URL and how to submit a form via jQuery Form's ajaxSubmit, including CORS header setup for cross‑origin requests, with complete code examples for both server‑side and client‑side implementations.
When using Spring Cloud Config's encryption/decryption endpoints via curl, special characters such as '+' and '=' can disappear because curl's default -d option does not URL‑encode the payload, but using --data-urlencode or setting the proper Content-Type header preserves these characters and ensures correct encryption and decryption.
This guide walks through curl’s syntax and options for fetching URLs, saving pages, handling cookies and headers, bypassing SSL verification, using proxies, performing POST requests, looping downloads, and FTP transfers, all illustrated with concrete command examples.
This guide explains how to use the curl command-line tool to fetch web pages, display or combine HTTP headers, save output to files, follow redirects, customize User-Agent and headers, manage cookies, and perform POST and GET requests with data, including examples for multiple file downloads.
The article examines the difficulties of iOS automation testing for large-scale mobile applications, such as long feedback cycles, simulator limitations, and multi‑app scenarios, and proposes solutions using private Apple APIs, xcodebuild, and curl‑driven WebDriverAgent commands to overcome Instrument singleton constraints and improve test efficiency.
This guide explains the fundamentals of creating a PHP web crawler, covering server communication basics, interpreting robots.txt and sitemap files, and providing practical code examples using file_get_contents and cURL for efficient content retrieval.
This guide walks you through using Zabbix's JSON‑RPC API with curl to authenticate, retrieve host and item IDs, fetch historical metrics for specific time ranges, and access additional system information such as version, macros, and media settings.
This article walks through using PHP's cURL extension to crawl tens of thousands of Zhihu user profiles, parse the HTML with regular expressions, store the extracted data efficiently, and present the results with responsive charts and dashboards.
This article explains curl’s two timeout settings—--connect-timeout for limiting the connection phase and -m/--max-time for restricting the total operation—provides error examples, and shows practical command-line usages to prevent hanging processes.
This guide introduces PHP's cURL extension, outlines its basic workflow, and provides clear GET and POST code examples, showing how to configure options, execute requests, handle responses, and decode JSON data into arrays or objects.
The article explains how OS command injection can be leveraged for blind data exfiltration and demonstrates practical techniques using tools such as Netcat, cURL, Wget, SMB, Telnet, ICMP and DNS, along with preventive measures to mitigate such vulnerabilities.
This tutorial walks through collecting over a million Zhihu user profiles using PHP on Ubuntu, handling cookies, bypassing image hot‑link protection, scaling requests with curl_multi, de‑duplicating MySQL inserts, and coordinating work with Redis and multi‑process pcntl for efficient large‑scale web scraping.
