CINXE.COM

<!doctype html><html lang="en"><head><meta charset="utf-8"><meta http-equiv="x-ua-compatible" content="ie=edge"><meta name="viewport" content="width=device-width,initial-scale=1"><script>!function(e,t,a,n){e[n]=e[n]||[],e[n].push({"gtm.start":(new Date).getTime(),event:"gtm.js"});var g=t.getElementsByTagName(a)[0],m=t.createElement(a);m.async=!0,m.src="https://www.googletagmanager.com/gtm.js?id=GTM-5VSZM5J",g.parentNode.insertBefore(m,g)}(window,document,"script","dataLayer")</script><meta name="description" content="Command-line tool for running a Dart program."><title>dart run | Dart</title><link rel="icon" sizes="64x64" href="/assets/img/logo/dart-64.png" eleventy:ignore><link href="/assets/img/touch-icon-iphone.png" rel="apple-touch-icon" eleventy:ignore><link href="/assets/img/touch-icon-ipad.png" rel="apple-touch-icon" sizes="152x152" eleventy:ignore><link href="/assets/img/touch-icon-iphone-retina.png" rel="apple-touch-icon" sizes="180x180" eleventy:ignore><link href="/assets/img/touch-icon-ipad-retina.png" rel="apple-touch-icon" sizes="167x167" eleventy:ignore><meta name="twitter:card" content="summary"><meta name="twitter:site" content="@dart_lang"><meta name="twitter:title" content="dart run"><meta name="twitter:description" content="Command-line tool for running a Dart program."><meta property="og:title" content="dart run"><meta property="og:description" content="Command-line tool for running a Dart program."><meta property="og:url" content="/tools/dart-run/"><meta property="og:image" content="/assets/img/logo/dart-logo-for-shares.png?2" eleventy:ignore><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Google+Sans:wght@400;500;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Google+Sans+Display:wght@400&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Google+Sans+Mono:wght@400;500;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Google+Sans+Text:wght@400;500;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0" rel="stylesheet"><link rel="stylesheet" href="/assets/css/main.css"><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.0/jquery.min.js" integrity="sha512-3gJwYpMe3QewGELv8k/BX9vcqhryRdzRMxVfq6ngyWXwo03GFEzjsUm8Q7RZcHPHksttq7/GFoxjCVUjkjvPdw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap/4.6.2/js/bootstrap.min.js" integrity="sha384-+sLIOodYLS7CIrQpBjl+C7nPvqq+FbNUBDunl/OZv93DB7Ln/533i8e/mZXLi/P+" crossorigin="anonymous" referrerpolicy="no-referrer"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/js-cookie/3.0.5/js.cookie.min.js" integrity="sha512-nlp9/l96/EpjYBx7EP7pGASVXNe80hGhYAUrjeXnu/fyF5Py0/RXav4BBNs7n5Hx1WFhOEOWSAVjGeC3oKxDVQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script><script src="/assets/js/os-tabs.js"></script><script src="/assets/js/utilities.js"></script><script src="/assets/js/main.js"></script><script>!function(e,a,t,n,c,o,s){e.GoogleAnalyticsObject=c,e[c]=e[c]||function(){(e[c].q=e[c].q||[]).push(arguments)},e[c].l=1*new Date,o=a.createElement(t),s=a.getElementsByTagName(t)[0],o.async=1,o.src="//www.google-analytics.com/analytics.js",s.parentNode.insertBefore(o,s)}(window,document,"script",0,"ga"),ga("create","UA-26406144-4","auto"),ga("send","pageview")</script></head><body class="default.html show_banner"><a id="skip" href="#site-content-title">Skip to main content</a><section id="cookie-notice"><div class="container"><p>dart.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. <a href="https://policies.google.com/technologies/cookies" target="_blank" rel="noopener">Learn more</a>.</p><button id="cookie-consent" class="btn btn-primary">OK, got it</button></div></section><noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5VSZM5J" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript><header id="page-header" class="site-header"><nav id="mainnav" class="site-header"><div id="menu-toggle"><i class="material-symbols">menu</i></div><a href="/" class="brand" title="Dart"><img src="/assets/img/logo/logo-white-text.svg" alt="Dart"></a><ul class="navbar"><li><a href="/overview" class="nav-link">Overview</a></li><li class="mainnav__get-started"><a href="/guides" class="nav-link active"><span>Docs</span></a></li><li><a href="/community" class="nav-link">Community</a></li><li><a href="/#try-dart" class="nav-link">Try Dart</a></li><li><a href="/get-dart" class="nav-link">Get Dart</a></li><li class="searchfield"><form action="/search" class="site-header__search form-inline" id="cse-search-box"><input type="hidden" name="cx" value="011220921317074318178:_yy-tmb5t_i"> <input type="hidden" name="ie" value="UTF-8"> <input type="hidden" name="hl" value="en"> <input class="site-header__searchfield form-control search-field" type="search" name="q" id="search-main" autocomplete="off" placeholder="Search" aria-label="Search"></form></li></ul></nav></header><div class="banner"><p class="banner__text">Announcing Dart 3.5 and an updated Dart roadmap! <a href="https://medium.com/dartlang/dart-3-5-6ca36259fa2f" target="_blank">Learn more</a></p></div><div id="sidenav"><form action="/search/" class="site-header__search form-inline"><input class="site-header__searchfield form-control search-field" type="search" name="q" id="search-side" autocomplete="off" placeholder="Search" aria-label="Search"></form><div class="site-sidebar"><ul class="navbar-nav"><li class="nav-item"><a href="/overview" class="nav-link">Overview</a></li><li class="nav-item"><a href="/community" class="nav-link">Community</a></li><li class="nav-item"><a href="https://dartpad.dev" class="nav-link">Try Dart</a></li><li class="nav-item"><a href="/get-dart" class="nav-link">Get Dart</a></li><li class="nav-item"><a href="/guides" class="nav-link">Docs</a></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li></ul><ul class="nav flex-column"><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-1" role="button" aria-expanded="false" aria-controls="sidenav-1">Language</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1"><li class="nav-item"><a class="nav-link" href="/language">Introduction</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-2" href="#sidenav-1-2" role="button" aria-expanded="false" aria-controls="sidenav-1-2">Syntax basics</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-2"><li class="nav-item"><a class="nav-link" href="/language/variables">Variables</a></li><li class="nav-item"><a class="nav-link" href="/language/operators">Operators</a></li><li class="nav-item"><a class="nav-link" href="/language/comments">Comments</a></li><li class="nav-item"><a class="nav-link" href="/language/metadata">Metadata</a></li><li class="nav-item"><a class="nav-link" href="/language/libraries">Libraries & imports</a></li><li class="nav-item"><a class="nav-link" href="/language/keywords">Keywords</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-3" href="#sidenav-1-3" role="button" aria-expanded="false" aria-controls="sidenav-1-3">Types</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-3"><li class="nav-item"><a class="nav-link" href="/language/built-in-types">Built-in types</a></li><li class="nav-item"><a class="nav-link" href="/language/records">Records</a></li><li class="nav-item"><a class="nav-link" href="/language/collections">Collections</a></li><li class="nav-item"><a class="nav-link" href="/language/generics">Generics</a></li><li class="nav-item"><a class="nav-link" href="/language/typedefs">Typedefs</a></li><li class="nav-item"><a class="nav-link" href="/language/type-system">Type system</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-4" href="#sidenav-1-4" role="button" aria-expanded="false" aria-controls="sidenav-1-4">Patterns</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-4"><li class="nav-item"><a class="nav-link" href="/language/patterns">Overview & usage</a></li><li class="nav-item"><a class="nav-link" href="/language/pattern-types">Pattern types</a></li><li class="nav-item"><a class="nav-link" href="https://codelabs.developers.google.com/codelabs/dart-patterns-records" target="_blank" rel="noopener">Applied tutorial</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/language/functions">Functions</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-6" href="#sidenav-1-6" role="button" aria-expanded="false" aria-controls="sidenav-1-6">Control flow</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-6"><li class="nav-item"><a class="nav-link" href="/language/loops">Loops</a></li><li class="nav-item"><a class="nav-link" href="/language/branches">Branches</a></li><li class="nav-item"><a class="nav-link" href="/language/error-handling">Error handling</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-7" href="#sidenav-1-7" role="button" aria-expanded="false" aria-controls="sidenav-1-7">Classes & objects</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-7"><li class="nav-item"><a class="nav-link" href="/language/classes">Classes</a></li><li class="nav-item"><a class="nav-link" href="/language/constructors">Constructors</a></li><li class="nav-item"><a class="nav-link" href="/language/methods">Methods</a></li><li class="nav-item"><a class="nav-link" href="/language/extend">Extend a class</a></li><li class="nav-item"><a class="nav-link" href="/language/mixins">Mixins</a></li><li class="nav-item"><a class="nav-link" href="/language/enums">Enums</a></li><li class="nav-item"><a class="nav-link" href="/language/extension-methods">Extension methods</a></li><li class="nav-item"><a class="nav-link" href="/language/extension-types">Extension types</a></li><li class="nav-item"><a class="nav-link" href="/language/callable-objects">Callable objects</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-8" href="#sidenav-1-8" role="button" aria-expanded="false" aria-controls="sidenav-1-8">Class modifiers</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-8"><li class="nav-item"><a class="nav-link" href="/language/class-modifiers">Overview & usage</a></li><li class="nav-item"><a class="nav-link" href="/language/class-modifiers-for-apis">Class modifiers for API maintainers</a></li><li class="nav-item"><a class="nav-link" href="/language/modifier-reference">Reference</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-9" href="#sidenav-1-9" role="button" aria-expanded="false" aria-controls="sidenav-1-9">Concurrency</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-9"><li class="nav-item"><a class="nav-link" href="/language/concurrency">Overview</a></li><li class="nav-item"><a class="nav-link" href="/language/async">Asynchronous support</a></li><li class="nav-item"><a class="nav-link" href="/language/isolates">Isolates</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-1-10" href="#sidenav-1-10" role="button" aria-expanded="false" aria-controls="sidenav-1-10">Null safety</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-1-10"><li class="nav-item"><a class="nav-link" href="/null-safety">Sound null safety</a></li><li class="nav-item"><a class="nav-link" href="/null-safety/migration-guide">Migrating to null safety</a></li><li class="nav-item"><a class="nav-link" href="/null-safety/understanding-null-safety">Understanding null safety</a></li><li class="nav-item"><a class="nav-link" href="/null-safety/unsound-null-safety">Unsound null safety</a></li><li class="nav-item"><a class="nav-link" href="/null-safety/faq">FAQ</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-2" role="button" aria-expanded="false" aria-controls="sidenav-2">Core libraries</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-2"><li class="nav-item"><a class="nav-link" href="/libraries">Overview</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-core">dart:core</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-async">dart:async</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-math">dart:math</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-convert">dart:convert</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-io">dart:io</a></li><li class="nav-item"><a class="nav-link" href="/libraries/dart-html">dart:html</a></li><div class="dropdown-divider"></div><li class="nav-item"><a class="nav-link" href="/libraries/collections/iterables">Iterable collections</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-2-10" href="#sidenav-2-10" role="button" aria-expanded="false" aria-controls="sidenav-2-10">Asynchronous programming</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-2-10"><li class="nav-item"><a class="nav-link" href="/libraries/async/async-await">Tutorial</a></li><li class="nav-item"><a class="nav-link" href="/libraries/async/futures-error-handling">Futures and error handling</a></li><li class="nav-item"><a class="nav-link" href="/libraries/async/using-streams">Using streams</a></li><li class="nav-item"><a class="nav-link" href="/libraries/async/creating-streams">Creating streams</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-3" role="button" aria-expanded="false" aria-controls="sidenav-3">Effective Dart</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-3"><li class="nav-item"><a class="nav-link" href="/effective-dart">Overview</a></li><li class="nav-item"><a class="nav-link" href="/effective-dart/style">Style</a></li><li class="nav-item"><a class="nav-link" href="/effective-dart/documentation">Documentation</a></li><li class="nav-item"><a class="nav-link" href="/effective-dart/usage">Usage</a></li><li class="nav-item"><a class="nav-link" href="/effective-dart/design">Design</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-4" role="button" aria-expanded="false" aria-controls="sidenav-4">Packages</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-4"><li class="nav-item"><a class="nav-link" href="/tools/pub/packages">How to use packages</a></li><li class="nav-item"><a class="nav-link" href="/resources/useful-packages">Commonly used packages</a></li><li class="nav-item"><a class="nav-link" href="/guides/libraries/create-packages">Creating packages</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/publishing">Publishing packages</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/writing-package-pages">Writing package pages</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-4-6" href="#sidenav-4-6" role="button" aria-expanded="false" aria-controls="sidenav-4-6">Package reference</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-4-6"><li class="nav-item"><a class="nav-link" href="/tools/pub/dependencies">Dependencies</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/glossary">Glossary</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/package-layout">Package layout conventions</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/environment-variables">Pub environment variables</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/pubspec">Pubspec file</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/troubleshoot">Troubleshooting pub</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/verified-publishers">Verified publishers</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/security-advisories">Security advisories</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/versioning">Versioning</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/custom-package-repositories">Custom package repositories</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/guides/libraries/private-files">What not to commit</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-5" role="button" aria-expanded="false" aria-controls="sidenav-5">Development</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-5"><li class="nav-item"><a class="nav-link" href="/guides/json">JSON</a></li><li class="nav-item"><a class="nav-link" href="/guides/language/numbers">Number representation</a></li><li class="nav-item"><a class="nav-link" href="/resources/google-apis">Google APIs</a></li><li class="nav-item"><a class="nav-link" href="/multiplatform-apps">Multi-platform apps</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-5-5" href="#sidenav-5-5" role="button" aria-expanded="false" aria-controls="sidenav-5-5">Command-line & server apps</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-5-5"><li class="nav-item"><a class="nav-link" href="/server">Overview</a></li><li class="nav-item"><a class="nav-link" href="/tutorials/server/get-started">Get started</a></li><li class="nav-item"><a class="nav-link" href="/tutorials/server/cmdline">Write command-line apps</a></li><li class="nav-item"><a class="nav-link" href="/tutorials/server/fetch-data">Fetch data from the internet</a></li><li class="nav-item"><a class="nav-link" href="/tutorials/server/httpserver">Write HTTP servers</a></li><li class="nav-item"><a class="nav-link" href="/server/libraries">Libraries & packages</a></li><li class="nav-item"><a class="nav-link" href="/server/google-cloud">Google Cloud</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-5-6" href="#sidenav-5-6" role="button" aria-expanded="false" aria-controls="sidenav-5-6">Web apps</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-5-6"><li class="nav-item"><a class="nav-link" href="/web">Overview</a></li><li class="nav-item"><a class="nav-link" href="/web/get-started">Get started</a></li><li class="nav-item"><a class="nav-link" href="/web/deployment">Deployment</a></li><li class="nav-item"><a class="nav-link" href="/web/libraries">Libraries & packages</a></li><li class="nav-item"><a class="nav-link" href="/web/wasm">Wasm compilation</a></li></ul></li><li class="nav-item"><a class="nav-link" href="/guides/environment-declarations">Environment declarations</a></li></ul></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-6" role="button" aria-expanded="false" aria-controls="sidenav-6">Interoperability</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-6"><li class="nav-item"><a class="nav-link" href="/interop/c-interop">C interop</a></li><li class="nav-item"><a class="nav-link" href="/interop/objective-c-interop">Objective-C & Swift interop</a></li><li class="nav-item"><a class="nav-link" href="/interop/java-interop">Java & Kotlin interop</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-6-4" href="#sidenav-6-4" role="button" aria-expanded="false" aria-controls="sidenav-6-4">JavaScript interop</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-6-4"><li class="nav-item"><a class="nav-link" href="/interop/js-interop">Overview</a></li><li class="nav-item"><a class="nav-link" href="/interop/js-interop/usage">Usage</a></li><li class="nav-item"><a class="nav-link" href="/interop/js-interop/js-types">JS types</a></li><li class="nav-item"><a class="nav-link" href="/interop/js-interop/tutorials">Tutorials</a></li><li class="nav-item"><a class="nav-link" href="/interop/js-interop/past-js-interop">Past JS interop</a></li><div class="dropdown-divider"></div><li class="nav-item"><a class="nav-link" href="/interop/js-interop/package-web">Web interop</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" href="#sidenav-7" role="button" aria-expanded="true" aria-controls="sidenav-7">Tools & techniques</a><ul class="nav flex-column flex-nowrap collapse show" id="sidenav-7"><li class="nav-item"><a class="nav-link" href="/tools">Overview</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-7-2" href="#sidenav-7-2" role="button" aria-expanded="false" aria-controls="sidenav-7-2">Editors & debuggers</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-7-2"><li class="nav-item"><a class="nav-link" href="/tools/jetbrains-plugin">IntelliJ & Android Studio</a></li><li class="nav-item"><a class="nav-link" href="/tools/vs-code">VS Code</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-devtools">Dart DevTools</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-7-2-4" href="#sidenav-7-2-4" role="button" aria-expanded="false" aria-controls="sidenav-7-2-4">DartPad</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-7-2-4"><li class="nav-item"><a class="nav-link" href="/tools/dartpad">Overview</a></li><li class="nav-item"><a class="nav-link" href="/tools/dartpad/troubleshoot">Troubleshooting DartPad</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" data-target="#sidenav-7-3" href="#sidenav-7-3" role="button" aria-expanded="true" aria-controls="sidenav-7-3">Command-line tools</a><ul class="nav flex-column flex-nowrap collapse show" id="sidenav-7-3"><li class="nav-item"><a class="nav-link active collapsible" data-toggle="collapse" data-target="#sidenav-7-3-1" href="#sidenav-7-3-1" role="button" aria-expanded="true" aria-controls="sidenav-7-3-1">Dart SDK</a><ul class="nav flex-column flex-nowrap collapse show" id="sidenav-7-3-1"><li class="nav-item"><a class="nav-link" href="/tools/sdk">Overview</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-tool">dart</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-analyze">dart analyze</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-compile">dart compile</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-create">dart create</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-doc">dart doc</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-fix">dart fix</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-format">dart format</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-info">dart info</a></li><li class="nav-item"><a class="nav-link" href="/tools/pub/cmd">dart pub</a></li><li class="nav-item"><a class="nav-link active" href="/tools/dart-run">dart run</a></li><li class="nav-item"><a class="nav-link" href="/tools/dart-test">dart test</a></li><li class="nav-item"><a class="nav-link" href="/tools/dartaotruntime">dartaotruntime</a></li><li class="nav-item"><a class="nav-link" href="/tools/experiment-flags">Experiment flags</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible" data-toggle="collapse" data-target="#sidenav-7-3-2" href="#sidenav-7-3-2" role="button" aria-expanded="true" aria-controls="sidenav-7-3-2">Other command-line tools</a><ul class="nav flex-column flex-nowrap collapse show" id="sidenav-7-3-2"><li class="nav-item"><a class="nav-link" href="/tools/build_runner">build_runner</a></li><li class="nav-item"><a class="nav-link" href="/tools/webdev">webdev</a></li></ul></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-7-4" href="#sidenav-7-4" role="button" aria-expanded="false" aria-controls="sidenav-7-4">Static analysis</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-7-4"><li class="nav-item"><a class="nav-link" href="/tools/analysis">Customizing static analysis</a></li><li class="nav-item"><a class="nav-link" href="/guides/language/sound-problems">Fixing common type problems</a></li><li class="nav-item"><a class="nav-link" href="/tools/non-promotion-reasons">Fixing type promotion failures</a></li><li class="nav-item"><a class="nav-link" href="/tools/linter-rules">Linter rules</a></li><li class="nav-item"><a class="nav-link" href="/tools/diagnostic-messages">Diagnostic messages</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-7-5" href="#sidenav-7-5" role="button" aria-expanded="false" aria-controls="sidenav-7-5">Testing & optimization</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-7-5"><li class="nav-item"><a class="nav-link" href="/guides/testing">Testing</a></li><li class="nav-item"><a class="nav-link" href="/web/debugging">Debugging web apps</a></li></ul></li></ul></li><li aria-hidden="true"><div class="sidebar-primary-divider"></div></li><li class="nav-item"><a class="nav-link collapsed collapsible" data-toggle="collapse" href="#sidenav-9" role="button" aria-expanded="false" aria-controls="sidenav-9">Resources</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-9"><li class="nav-item"><a class="nav-link" href="/resources/dart-cheatsheet">Language cheatsheet</a></li><li class="nav-item"><a class="nav-link" href="/resources/breaking-changes">Breaking changes</a></li><li class="nav-item"><a class="nav-link" href="/guides/language/evolution">Language evolution</a></li><li class="nav-item"><a class="nav-link" href="/guides/language/spec">Language specification</a></li><li class="nav-item"><a class="nav-link" href="/resources/dart-3-migration">Dart 3 migration guide</a></li><li class="nav-item"><a class="nav-link collapsible collapsed" data-toggle="collapse" data-target="#sidenav-9-6" href="#sidenav-9-6" role="button" aria-expanded="false" aria-controls="sidenav-9-6">Coming from ...</a><ul class="nav flex-column flex-nowrap collapse" id="sidenav-9-6"><li class="nav-item"><a class="nav-link" href="/resources/coming-from/js-to-dart">JavaScript to Dart</a></li><li class="nav-item"><a class="nav-link" href="/resources/coming-from/swift-to-dart">Swift to Dart</a></li></ul></li><div class="dropdown-divider"></div><li class="nav-item"><a class="nav-link" href="/resources/faq">FAQ</a></li><li class="nav-item"><a class="nav-link" href="/resources/glossary">Glossary</a></li><li class="nav-item"><a class="nav-link" href="/resources/books">Books</a></li><li class="nav-item"><a class="nav-link" href="/resources/videos">Videos</a></li><li class="nav-item"><a class="nav-link" href="/tutorials">Tutorials</a></li></ul></li><li class="nav-item"><a class="nav-link collapsible" data-toggle="collapse" href="#sidenav-10" role="button" aria-expanded="true" aria-controls="sidenav-10">Related sites</a><ul class="nav flex-column flex-nowrap collapse show" id="sidenav-10"><li class="nav-item"><a class="nav-link" href="https://api.dart.dev" target="_blank" rel="noopener">API reference</a></li><li class="nav-item"><a class="nav-link" href="https://medium.com/dartlang" target="_blank" rel="noopener">Blog</a></li><li class="nav-item"><a class="nav-link" href="https://dartpad.dev" target="_blank" rel="noopener">DartPad (online editor)</a></li><li class="nav-item"><a class="nav-link" href="https://flutter.dev" target="_blank" rel="noopener">Flutter</a></li><li class="nav-item"><a class="nav-link" href="https://pub.dev" target="_blank" rel="noopener">Package site</a></li></ul></li></ul></div></div><main id="page-content"><div id="site-toc--side" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry nav-item"><a class="nav-link" href="#running-a-dart-file">Running a Dart file</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#running-a-program-thats-in-a-package">Running a program that's in a package</a><ul class="nav"><li class="toc-entry nav-item"><a class="nav-link" href="#in-a-depended-on-package">In a depended-on package</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#in-the-current-package">In the current package</a></li></ul></li><li class="toc-entry nav-item"><a class="nav-link" href="#supplying-arguments-to-main">Supplying arguments to main()</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#debugging">Debugging</a></li><li class="toc-entry nav-item"><a class="nav-link" href="#enabling-experimental-features">Enabling experimental features</a></li></ul></div><article><div class="content"><div id="site-content-title"><h1>dart run</h1></div><div id="site-toc--inline" class="site-toc"><header class="site-toc__title">Contents</header><ul class="section-nav"><li class="toc-entry"><a href="#running-a-dart-file">Running a Dart file</a></li><li class="toc-entry"><a href="#running-a-program-thats-in-a-package">Running a program that's in a package</a><ul><li class="toc-entry"><a href="#in-a-depended-on-package">In a depended-on package</a></li><li class="toc-entry"><a href="#in-the-current-package">In the current package</a></li></ul></li><li class="toc-entry"><a href="#supplying-arguments-to-main">Supplying arguments to main()</a></li><li class="toc-entry"><a href="#debugging">Debugging</a></li><li class="toc-entry"><a href="#enabling-experimental-features">Enabling experimental features</a></li></ul></div><p>The <code>dart run</code> command supports running a Dart program鈥攍ocated in a file, in the current package, or in one of the dependencies of the current package鈥攆rom the command line. This command provides functionality that was previously in <code>pub run</code> and the Dart VM tool. To run a program from an arbitrary location, use the <a href="/tools/pub/cmd/pub-global">pub global</a> command.</p><div class="code-block-wrapper language-plaintext"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span>dart run [options] [<DART_FILE> | <PACKAGE_TARGET>] [args]</span></span></code></pre></div></div><p>Here's an example of creating a new app and running it:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart create myapp</span></span> <span class="line"><span style="color:#222222">$ cd myapp</span></span> <span class="line"><span style="color:#222222">$ dart run</span></span></code></pre></div></div><aside class="alert alert-success"><div class="alert-header"><i class="material-symbols" aria-hidden="true">lightbulb</i> <span>Tip</span></div><div class="alert-content"><p>To learn more information about this and other <code>dart</code> commands, check out the <a href="/tools/dart-tool">Dart command-line tool page</a>.</p></div></aside><div class="header-wrapper"><h2 id="running-a-dart-file">Running a Dart file</h2><a class="heading-link" href="#running-a-dart-file" aria-label="Link to 'Running a Dart file' section">#</a></div><p>You can run a Dart file by passing its relative path:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run tool/debug.dart</span></span></code></pre></div></div><div class="header-wrapper"><h2 id="running-a-program-thats-in-a-package">Running a program that's in a package</h2><a class="heading-link" href="#running-a-program-thats-in-a-package" aria-label="Link to 'Running a program that's in a package' section">#</a></div><p>The instructions in this section assume that you're executing the <code>dart run</code> command from the directory that's at the top of a Dart package (the <em>current package</em>). For information on the directory structure of Dart packages, see <a href="/guides/libraries/create-packages">package layout conventions</a>.</p><div class="header-wrapper"><h3 id="in-a-depended-on-package">In a depended-on package</h3><a class="heading-link" href="#in-a-depended-on-package" aria-label="Link to 'In a depended-on package' section">#</a></div><p>You can run programs that are distributed in the <code>bin</code> directory of any package that the current package depends on. To run such a program, specify the depended-on package name and the program name. You can omit the program name if it's the same as the package name.</p><p>For example, say you're in the top directory of a package that depends on the <code>bar</code> package. To run the main program that's in the <code>bar</code> package (<code>bin/bar.dart</code>), you can use this command:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run bar</span></span></code></pre></div></div><p>If the program name doesn't match the package name, use the form <code><package name>:<program name></code>. For example, to run the program <code>bin/baz.dart</code> that's in the <code>bar</code> package, use this command:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run bar:baz</span></span></code></pre></div></div><p>The <code>bin</code> directory is the only place with visible programs. All other directories in the depended-on package are private.</p><div class="header-wrapper"><h3 id="in-the-current-package">In the current package</h3><a class="heading-link" href="#in-the-current-package" aria-label="Link to 'In the current package' section">#</a></div><p>When the current directory matches the package name (that is, you're in the directory that matches the <code>name</code> property in the pubspec), then you can omit the package name. If the program name matches the package name (that is, it's the main program), then you can also omit the program name.</p><p>Here's the shortest form of <code>dart run</code>, which runs the main program for the current package. For example, if you're in the top directory of the <code>foo</code> package, this command runs <code>bin/foo.dart</code>:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run</span></span></code></pre></div></div><p>If the program name doesn't match the package name, then add a colon and the program name. For example, this command runs <code>bin/baz.dart</code> in the current package:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run :baz</span></span></code></pre></div></div><p>To run a program that's in the current package but not in the <code>bin</code> directory, pass a relative path (as shown before):</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run tool/debug.dart</span></span></code></pre></div></div><div class="header-wrapper"><h2 id="supplying-arguments-to-main">Supplying arguments to main()</h2><a class="heading-link" href="#supplying-arguments-to-main" aria-label="Link to 'Supplying arguments to main()' section">#</a></div><p>To supply <a href="/language/functions#the-main-function">arguments to the <code>main()</code> function</a>, put them at the end of the command:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run tool/debug.dart arg1 arg2</span></span></code></pre></div></div><p>When you're running the main program for the current package, add the package name. Here's an example of running <code>bin/foo.dart</code> with arguments while you're in the top directory of the <code>foo</code> package:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run foo arg1 arg2</span></span></code></pre></div></div><div class="header-wrapper"><h2 id="debugging">Debugging</h2><a class="heading-link" href="#debugging" aria-label="Link to 'Debugging' section">#</a></div><p>To enable debugging, add one or more of these common debugging options to your <code>dart run</code> command:</p><ul><li><p>To enable <a href="/language/error-handling#assert"><code>assert</code> statements</a>, add the <code>--enable-asserts</code> flag:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run --enable-asserts tool/debug.dart</span></span></code></pre></div></div></li><li><p>To enable debugging and performance analysis through <a href="/tools/dart-devtools">Dart DevTools</a>, add the <code>--observe</code> flag:</p><div class="code-block-wrapper language-console"><div class="code-block-body"><pre class="shiki dash-light" tabindex="0"><code><span class="line"><span style="color:#222222">$ dart run --observe tool/debug.dart</span></span></code></pre></div></div><p>To learn more about debugging with Dart DevTools, see <a href="/tools/dart-devtools#using-devtools-with-a-command-line-app">Using DevTools with a command-line app</a>.</p></li></ul><p>To learn more about other debugging options, run <code>dart run --help</code>.</p><div class="header-wrapper"><h2 id="enabling-experimental-features">Enabling experimental features</h2><a class="heading-link" href="#enabling-experimental-features" aria-label="Link to 'Enabling experimental features' section">#</a></div><p>To enable new features and enhancements that are currently in development, use <a href="/tools/experiment-flags">experiment flags</a>.</p><p id="page-github-links"><span>Unless stated otherwise, the documentation on this site reflects Dart 3.5.4. Page last updated on 2024-05-06.</span> <a href="https://github.com/dart-lang/site-www/tree/main/src/content/tools/dart-run.md" target="_blank" rel="noopener">View source</a> <span>or </span><a href="https://github.com/dart-lang/site-www/issues/new?template=1_page_issue.yml&page-url=https://dart.dev/tools/dart-run/&page-source=https://github.com/dart-lang/site-www/tree/main/src/content/tools/dart-run.md" title="Report an issue with this page" target="_blank" rel="noopener">report an issue</a>.</p></div></article></main><footer id="page-footer"><div class="footer-section footer-main"><a href="/" class="brand" title="Dart"><img src="/assets/img/logo/logo-white-text.svg" alt="Dart" width="164"></a><div class="footer-social-links"><a href="https://medium.com/dartlang" target="_blank" rel="noopener" title="Medium blog"><svg><use href="/assets/img/social/medium.svg#medium"></use></svg> </a><a href="https://github.com/dart-lang" target="_blank" rel="noopener" title="GitHub"><svg><use href="/assets/img/social/github.svg#github"></use></svg> </a><a href="https://twitter.com/dart_lang" target="_blank" rel="noopener" title="X (Twitter)"><svg><use href="/assets/img/social/x.svg#x"></use></svg></a></div></div><div class="footer-section footer-tray"><div class="footer-licenses">Except as otherwise noted, this site is licensed under a <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>, and code samples are licensed under the <a href="https://opensource.org/licenses/BSD-3-Clause">3-Clause BSD License</a>.</div><div class="footer-utility-links"><ul><li><a href="/terms" title="Terms of use">Terms</a></li><li><a href="https://policies.google.com/privacy" target="_blank" rel="noopener" title="Privacy policy">Privacy</a></li><li><a href="/security" title="Security philosophy and practices">Security</a></li></ul></div></div></footer></body></html>