Deployed 100+ cloud infrastructures Reduced deployment time by 70% for SaaS clients Senior DevOps Engineer with 7+ years of experience designing, scaling, and optimizing cloud infrastructure for startups and growing products. I specialize in building production-grade systems on AWS and Kubernetes that are reliable, cost-efficient, and easy to operate. My work focuses on eliminating downtime, improving deployment speed, and maintaining predictable infrastructure as systems scale. What I Deliver: Cloud Infrastructure (AWS / GCP / Azure) Architect and manage secure, scalable environments using best practices. Kubernetes & Containerization Production-grade deployments on EKS, GKE, AKS with Docker-based workflows. Infrastructure as Code (IaC) Terraform / CloudFormation setups for repeatable, version-controlled infrastructure. CI/CD Automation Fast and reliable pipelines using GitHub Actions, GitLab CI, Jenkins. Cost Optimization Proven track record of reducing cloud costs by 30–40% without performance impact. Monitoring & Reliability End-to-end observability using Prometheus, Grafana, ELK, CloudWatch. Impact from Recent Projects: Reduced AWS infrastructure cost by 40% through rightsizing and architecture changes Improved deployment speed by 3x using optimized CI/CD pipelines Maintained high-availability production systems (99.9%+ uptime) Migrated legacy systems to cloud-native architectures with zero downtime How I Work: Focus on long-term stability, not quick fixes Clear communication and ownership of infrastructure Design systems that scale without constant firefighting If you need a DevOps engineer who can own your infrastructure, reduce risk, and scale your system cleanly, we should discuss your project. End-to-end system design DevOps + Development ownership Scalable full-stack architecture Cloud-native application development Infrastructure + application optimization DevOps | Kubernetes | Docker Terraform | CI/CD | Amazon Web Services Microsoft Azure | Google Cloud Platform | AWS Lambda AWS Server Migration | Jenkins | Node.js React | API Integration | DevOps Engineering AI Development | Azure DevOps | Cloud Architecture Infrastructure as Code | Amazon EC2

Senior Full-Stack Engineer with 8+ years of experience building SaaS platforms, business applications, APIs, and scalable web systems used by real customers and growing teams. My primary expertise is PHP/Laravel development combined with modern frontend technologies including React, Next.js, Vue.js, and JavaScript-based backend services built with Node.js when required. I help startups and businesses build reliable software from concept to production, focusing on clean architecture, maintainability, performance, and long-term scalability. Over the years, I've built SaaS platforms, ERP systems, marketplaces, CRM solutions, and high-traffic business applications serving thousands of users across multiple industries. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗯𝘂𝗶𝗹𝗱 • SaaS applications and subscription platforms • Laravel applications and enterprise systems • Custom PHP web applications • React and Next.js applications • REST APIs and third-party integrations • CRM, ERP, and business management platforms • Marketplace and multi-vendor solutions • Custom dashboards and admin panels • Mobile-ready backend architectures • Payment integrations (Stripe, PayPal, etc.) • Automation and workflow systems 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗦𝘆𝘀𝘁𝗲𝗺 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 • PHP & Laravel • Node.js & Express • MySQL, PostgreSQL & Redis • REST APIs & GraphQL • Queue systems and background jobs • Authentication & Authorization • Third-party integrations • Performance optimization and scalability 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 • React • Next.js • Vue.js • JavaScript / TypeScript • Tailwind CSS • Responsive UI development • SEO-friendly web applications 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 • AWS • DigitalOcean • Docker • CI/CD Pipelines • Linux Server Administration 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 I also help clients integrate practical AI capabilities into existing products, including chatbots, OpenAI integrations, knowledge-base assistants, and workflow automation. My focus is on implementing AI features that create measurable business value rather than building experimental machine learning systems. 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲 • 8+ years of professional software development experience • Strong Laravel, PHP, React, and SaaS development background • End-to-end product ownership • Ability to own both architecture and implementation • Excellent communication • Long-term partnership mindset If you're looking for a Laravel Developer, PHP Developer, React Developer, Next.js Developer, Node.js Developer, or an experienced Full-Stack Engineer who can build, improve, or scale your software product, I'd be happy to discuss your project. Abdullah...

Rated as one of the top freelancers for Odoo (OpenERP) jobs in Upwork with successfully completed more than 140+ projects completed only on Upwork and overall 100% Job Success Ratio. I take pride in delivering rapid, customized open source ERP service using Odoo, Mobile App, SEO & Website Development. Whether you are developing an application from scratch, working on an existing application or porting your application to a new platform or framework, or looking to promote or rank your website on top of search engine results I can meet your business needs. ODOO EXPERIENCE 1) Odoo Customization & Development 2) Odoo Installation & Training 3) Odoo Mobile Framework Integration 4) Odoo Maintenance & Support 5) Odoo Database Migration 6) Odoo Consulting TECHNOLOGY EXPERIENCE -> ERP Technologies: Odoo, OpenERP, Flectra, ERP Next, Salesforce -> Technologies: PHP, Python -> Database: PostgreSQL, MySQL, MS SQL, MongoDB, Firebird SQL -> Mobile Apps: Android, iOS, React Native, Kotlin, Swift -> Web Development: Wordpress, Node.js, Angular.js, Full Stack Development -> SEO: On-Page SEO, Off-Page SEO, Technical SEO, Local SEO Services in Mobile Apps domain: - iOS & Android Apps Development - Universal Apps Development - UI/UX Design & Development - Mobile Apps Wireframing - API Development & Integration SEO Services we provide: - Resolving technical issues related to website - Optimizing On-page SEO factors - Link building - Keyword Research - Content Marketing - Local Search Optimization - Google My Business Page Optimization DOMAIN EXPERIENCE 1) CRM 2) SALE 3) PURCHASE 4) INVENTORY (STOCK MANAGEMENT) 5) FINANCIAL ACCOUNTING 6) MANUFACTURING 7) PROJECT MANAGEMENT 8) POINT OF SALE 9) HUMAN RESOURCE 10) MARKETING 11) HEALTH CARE

I design and build production-ready web and mobile products that are meant to be used, scaled, and relied on. For over 12 years, I’ve worked hands-on across SaaS platforms, internal systems, marketplaces, dashboards, and AI-driven features from architecture and integrations to deployment and long-term stability. My focus is simple: building systems that plug into real business workflows, work with the tools teams already use, and actually ship without becoming technical debt. I stay close to the code, close to the product, and focused on outcomes. 𝐂𝐨𝐫𝐞 𝐬𝐭𝐚𝐜𝐤 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 (𝐬𝐭𝐫𝐢𝐜𝐭), 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐄𝐱𝐩𝐫𝐞𝐬𝐬, 𝐍𝐞𝐬𝐭𝐉𝐒, 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋, 𝐏𝐫𝐢𝐬𝐦𝐚, 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞, 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝 𝐂𝐒𝐒, 𝐬𝐡𝐚𝐝𝐜𝐧 𝐮𝐢, 𝐑𝐚𝐝𝐢𝐱 𝐔𝐈 𝐌𝐨𝐛𝐢𝐥𝐞: 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞, 𝐅𝐥𝐮𝐭𝐭𝐞𝐫, 𝐒𝐰𝐢𝐟𝐭 𝐚𝐧𝐝 𝐊𝐨𝐭𝐥𝐢𝐧 𝐂𝐥𝐨𝐮𝐝 𝐚𝐧𝐝 𝐃𝐞𝐯𝐎𝐩𝐬: 𝐕𝐞𝐫𝐜𝐞𝐥, 𝐀𝐖𝐒, 𝐃𝐢𝐠𝐢𝐭𝐚𝐥𝐎𝐜𝐞𝐚𝐧, 𝐃𝐨𝐜𝐤𝐞𝐫, 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬, 𝐑𝐚𝐢𝐥𝐰𝐚𝐲, 𝐑𝐞𝐧𝐝𝐞𝐫, 𝐍𝐞𝐭𝐥𝐢𝐟𝐲 𝐃𝐚𝐭𝐚 𝐚𝐧𝐝 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬: 𝐑𝐞𝐝𝐢𝐬, 𝐁𝐢𝐠𝐐𝐮𝐞𝐫𝐲, 𝐌𝐞𝐭𝐚𝐛𝐚𝐬𝐞, 𝐀𝐢𝐫𝐟𝐥𝐨𝐰, 𝐅𝐅𝐌𝐏𝐄𝐆 𝐀𝐈 𝐚𝐧𝐝 𝐑𝐀𝐆 𝐎𝐩𝐞𝐧𝐀𝐈 𝐆𝐏𝐓, 𝐕𝐢𝐬𝐢𝐨𝐧, 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧, 𝐑𝐀𝐆 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐞𝐦𝐛𝐞𝐝𝐝𝐢𝐧𝐠𝐬, 𝐫𝐞𝐭𝐫𝐢𝐞𝐯𝐚𝐥, 𝐫𝐞𝐫𝐚𝐧𝐤𝐢𝐧𝐠, 𝐯𝐞𝐜𝐭𝐨𝐫 𝐬𝐞𝐚𝐫𝐜𝐡 𝐮𝐬𝐢𝐧𝐠 𝐏𝐢𝐧𝐞𝐜𝐨𝐧𝐞 𝐨𝐫 𝐩𝐠𝐯𝐞𝐜𝐭𝐨𝐫 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐨𝐟𝐭𝐞𝐧 𝐒𝐭𝐫𝐢𝐩𝐞 𝐬𝐮𝐛𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧𝐬, 𝐂𝐡𝐞𝐜𝐤𝐨𝐮𝐭, 𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐏𝐨𝐫𝐭𝐚𝐥, 𝐰𝐞𝐛𝐡𝐨𝐨𝐤𝐬 𝐓𝐰𝐢𝐥𝐢𝐨 𝐕𝐨𝐢𝐜𝐞, 𝐈𝐕𝐑, 𝐒𝐌𝐒, 𝐰𝐞𝐛𝐡𝐨𝐨𝐤𝐬 𝐆𝐨𝐨𝐠𝐥𝐞 𝐖𝐨𝐫𝐤𝐬𝐩𝐚𝐜𝐞 𝐀𝐏𝐈𝐬: 𝐆𝐦𝐚𝐢𝐥, 𝐂𝐚𝐥𝐞𝐧𝐝𝐚𝐫, 𝐃𝐫𝐢𝐯𝐞, 𝐎𝐀𝐮𝐭𝐡 𝐌𝐞𝐭𝐚 𝐆𝐫𝐚𝐩𝐡 𝐀𝐏𝐈 𝐟𝐨𝐫 𝐅𝐚𝐜𝐞𝐛𝐨𝐨𝐤 𝐚𝐧𝐝 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦, 𝐆𝐨𝐨𝐠𝐥𝐞 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐏𝐫𝐨𝐟𝐢𝐥𝐞 𝐀𝐏𝐈 𝐒𝐡𝐨𝐩𝐢𝐟𝐲, 𝐀𝐦𝐚𝐳𝐨𝐧 𝐒𝐞𝐥𝐥𝐞𝐫 𝐂𝐞𝐧𝐭𝐫𝐚𝐥, 𝐚𝐧𝐝 𝐨𝐭𝐡𝐞𝐫 𝐭𝐡𝐢𝐫𝐝 𝐩𝐚𝐫𝐭𝐲 𝐑𝐄𝐒𝐓 𝐀𝐏𝐈𝐬 𝐇𝐮𝐛𝐒𝐩𝐨𝐭, 𝐙𝐚𝐩𝐢𝐞𝐫 Design Handoff: 𝐅𝐢𝐠𝐦𝐚 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐝𝐞𝐥𝐢𝐯𝐞𝐫 𝐟𝐨𝐫 𝐲𝐨𝐮 • Multi tenant apps with company and location level access control, role based permissions, and audit logs • Admin panels for non technical teams to manage rules, content, pricing, users, approvals, and workflows • Secure systems for sensitive data, strong auth, input validation, and clean separation of configuration and application data • AI agents that retrieve, reason, decide, use tools, and escalate safely, with caching and cost control • Business automations for operations and sales, 𝐂𝐑𝐌 workflows, scheduling, notifications, and reporting • 𝐆𝐏𝐒 𝐭𝐫𝐚𝐜𝐤𝐢𝐧𝐠 experiences: live tracking, geofencing, history, alerts, device state, and reliability handling • Production deployment, monitoring, documentation, and post launch support 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 I keep scope clear, ship in milestones, demo progress weekly, and document everything so your team is never stuck. You get clean code, predictable delivery, and a system you can maintain. If you share your goals, current stack, and timeline, I will reply with a clear plan, risks to watch, and the fastest path to a strong V1. 𝐋𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫𝐰𝐚𝐫𝐝! 𝐌𝐚𝐝𝐝𝐲

⭐ Top‑Rated Plus | 100% Job Success | 300+ Projects Completed | 23,000 + Hours With more than a decade of experience and a sterling Upwork track record, I bring a full-spectrum web development skillset—from WordPress and Joomla to Laravel, React, and Flutter—along with UI/UX design and API integrations. I transform complex real‑world challenges into elegant digital solutions. 💡 My Value Promise I'm not just a coder—I’m your strategic tech advisor. I analyze your current goals and workflows, propose tailored solutions, then build with the latest tools and agile practices to ensure your digital presence exceeds expectations. 🏆 Why Clients Choose Me End‑to‑end delivery: from strategy to launch, with no wasted steps Clean, mobile‑friendly, performance‑driven & secure architecture Sharp design sensibility meeting user-centered goals Exceptional cross‑platform compatibility and responsive UX Fast, friendly communication and on‑time deliveries always 🛠 Tech Stack Overview Backend: PHP, Laravel, REST APIs, MySQL Frontend: React, Vue, Bootstrap, JavaScript, HTML5/CSS3 CMS & E‑commerce: WordPress, WooCommerce, Joomla, Magento Mobile + Cross‑Platform: Flutter, React Native Design & Tools: Figma, Adobe XD, Git, Jira, Trello, AWS/Azure 📩 Ready to get started? Send me a message with your goals and let’s build something great.

With over 20 years of hands-on experience and a Master’s degree in Information Systems, I provide data strategy and technical leadership blended with full-stack execution. I specialize in AI-native data engineering practices that accelerate delivery, informed by strong architectural discipline and senior engineering judgment to ensure durable, production-grade outcomes. My work spans full-stack data execution across: * Cloud Warehouses: Snowflake, BigQuery, Redshift * Pipelines and Transformation: dbt, Airflow, Hevo, Airbyte, Glue, Fivetran, etc * Metrics and Analytics: LTV, churn, retention, ARR/MRR, cohort analysis * AI-Native Development: Cursor, Claude Code, modern LLMs, MCP-based workflows, structured AI-assisted coding

I'm the Founder & CEO of two AI companies - UppLabs (Top 1% AI development agency on Clutch & Upwork) and OpsWorks Co. (DevOps and Cloud consultancy, AWS, GCP amd Azure Partner) - with a combined team of 50+ certified engineers. BY THE NUMBERS: 🏆 100+ AI, DevOps, and software projects delivered 🏆 $2M+ combined earned on Upwork, 100% Job Success Score 🏆 $100M+ in client revenue generated 🏆 100+ certifications across the team 🏆 60,000+ hours logged, 200+ completed contracts TWO THINGS WE DO BETTER THAN ALMOST ANYONE ON UPWORK: 🤖 1. BUILD AI-POWERED SOFTWARE Custom AI agents, RAG pipelines, production ML models, and full-stack platforms for Fintech, Healthcare, and PropTech. Not ChatGPT wrappers - real systems that process transactions, automate clinical workflows, and make business decisions. Clients include Deloitte, Citibank, Disney, and TimelyCare. ⚙️ 2. BUILD INFRASTRUCTURE THAT RUNS ITSELF AI-augmented DevOps, AWS/GCP/Azure architecture, and intelligent monitoring that self-heals, auto-scales, and cuts cloud costs. ETX Capital cut infrastructure spend by 50%. Syndigo cut costs by 92%. Vodafone improved efficiency by 40%. HOW WE WORK - AI-NATIVE FROM DAY ONE: We don't just build AI products - we use AI agents and modern automation internally to deliver faster and better than traditional teams. 🛠️ On the development side: - AI-assisted architecture design and code generation to ship features 3x faster - Agentic code review pipelines that catch bugs and security issues before humans do - LLM-powered test generation and documentation — zero manual overhead - AI pair programming across the entire engineering team as standard practice 🔁 On the DevOps side: - AI agents that monitor infrastructure 24/7, detect anomalies, and self-heal before incidents occur - Intelligent CI/CD pipelines with LLM-powered deployment gating and rollback triggers - Agentic cost optimization that continuously rightsizes resources and eliminates waste - AI-driven incident response that diagnoses, escalates, and resolves issues autonomously 💡 The result: your product gets built faster, your infrastructure costs less, and your team spends zero time on problems that machines can handle. WHAT YOU GET: ✅ Production-ready AI: agents, LLM pipelines, fraud detection, clinical AI, compliance automation ✅ AI-native web and mobile apps built to scale (React, Next.js, React Native) ✅ Zero-downtime infrastructure on AWS, Azure, GCP with Kubernetes and Terraform ✅ Full compliance: HIPAA, SOC2, PCI DSS, ISO 27001, GDPR, OWASP ✅ Cloud cost reduction of up to 90% using AI-driven optimization ✅ MVPs shipped in weeks, not months - 3x faster time-to-market Whether you need an intelligent product built from scratch or infrastructure that stops costing you sleep - let's talk. 🚀

Senior Full Stack Engineer with 6+ years of production experience building SaaS platforms, web apps, and APIs across the .NET / Angular / React / Azure stack. Top Rated on Upwork with a 100% Job Success Score across 28+ contracts. I've also been expanding into Python (FastAPI / Flask) and applied AI/ML — adding LLM features, RAG, and data pipelines to existing products. It's important to me to build long-term relationships with clients, so I'm primarily looking for long-term projects. My skills include: ✔️ Back-end: .NET 8 / C#, ASP.NET Core MVC/MVVM, Web API, SignalR, Razor, WPF, LINQ ✔️ Front-end: Angular, React, TypeScript, JavaScript, jQuery, HTML5, CSS, Bootstrap, Tailwind ✔️ Python: FastAPI, Flask, Pandas, NumPy, scikit-learn ✔️ AI / ML: OpenAI API, LangChain, LLM integration, RAG basics, prompt engineering ✔️ Cloud: Microsoft Azure — App Service, Azure Functions, Azure SQL, Cosmos DB, Azure DevOps ✔️ ORM: Entity Framework Core, Dapper ✔️ Database: SQL Server, MongoDB, PostgreSQL, MySQL, Redis ✔️ Architecture: REST API design, microservices, real-time (SignalR / WebSockets), auth (OAuth / JWT), payment integration (Stripe) ✔️ Tooling: Visual Studio, VS Code, Git, Azure DevOps, Docker ✔️ Process: Agile, Scrum, Kanban Expertise: ✔️ Web Development — REST Web API, ASP.NET Core, Angular, React ✔️ Cloud & Backend — Azure App Service, Web Servicer, Functions, SQL, AKS, Entra ID ✔️ Python + AI Add-ons — Flask / FastAPI services, OpenAI / LangChain integration, light data pipelines Send a message with your goal in two sentences, or book a consultation and we'll scope it together.

🌟 Overview 💬 New to freelancing but an expert-level professional with over 20 years of hands-on experience in database and application development. Hello, I’m Muhammad Aslam, a seasoned Microsoft Access, VBA, and SQL Expert with over 10 years of experience designing and developing custom database and business automation solutions. I build data-driven applications that simplify operations, reduce manual work, and deliver clear, actionable insights. My clients range from small businesses to enterprise teams seeking reliable, efficient, and scalable systems. 💡 What I Can Do for You 🔹 Microsoft Access & VBA Development – Custom database apps, automation scripts, and form/report design. 🔹 SQL & Database Solutions – SQL Server, Supabase, and MySQL design, optimization, and integration. 🔹 Business Management Systems – Inventory, Accounting, POS, and Project Management Systems. 🔹 Automation & Integration – Streamline reporting, data migration, and cross-platform workflows. 🔹 Application Development – C# .NET and Flutter apps connected to Access or SQL back-ends. 🚀 Highlighted Projects ✅ Database Management System (DMS): Built an MS Access + SQL Server solution that improved data entry accuracy and reporting speed by 30%. ✅ Inventory Management App: Developed in C# .NET + Access, reduced stock discrepancies by 25% and improved order fulfillment. ✅ Automated Reporting Tool: Connected SQL Server to Access for automated weekly reports, saving teams 5+ hours/week in manual work. 🧠 Technical Expertise 💻 Languages: VBA, SQL, C# 🗄️ Databases: Microsoft Access, SQL Server, Supabase, MySQL 🧰 Tools: Visual Studio, Access Developer Tools 🎯 Other Skills: Data Automation, Business Logic Design, UI/UX for Business Apps, Application Optimization 🚀 Let’s work together to automate your business, streamline data management, and build powerful, user-friendly solutions that grow with you.

A highly skilled and proficient Full Stack Developer with over 10 years of professional experience in designing and creating responsive and adaptive web applications. Experienced in leveraging HTML, CSS, PHP and JavaScript programming languages to drive design, build, test and deployment efforts for custom website solutions. Results-driven individual contributor with a successful track record in exceeding expectations for web development initiatives. • Over 8 years of experience in JavaScript technology like ReactJS, AngularJS/Angular, Express.js, MongoDB and NodeJS. • Experience building applications using JavaScript MEAN stack and MERN stack using Redux, Flux, Common.js, ExtJS and Web-Pack for Single Page Application Development. • Expertise in developing web pages using HTML5, CSS3, SASS, LESS, ES6, jQuery, AJAX, JSON and XML. • Expertise in creating user validation forms and using the RESTful services to send the data to the server. • Good knowledge on AWS Cloud formation templates and configured SQS service using API. • PHP Frameworks: Codeigniter,, Laravel, Symfony, Yii • Third Party Integration : Twillio, PayPal, Authorize.net, Amazon ( Payments, S3 ), UPS, USPS • Databases: MySQL, PostgreSQL, MongoDB • Version Control Systems: GIT, Bitbucket and SVN • Other Tools: Redis, MemCached • Operating Systems : Windows, Linux