<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `args_os` fn in crate `std`."><meta name="keywords" content="rust, rustlang, rust-lang, args_os"><title>std::env::args_os - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a><div class="sidebar-elems"><p class='location'><a href='../index.html'>std</a>::<wbr><a href='index.html'>env</a></p><script>window.sidebarCurrent = {name: 'args_os', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>std</a>::<wbr><a href='index.html'>env</a>::<wbr><a class="fn" href=''>args_os</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/std/env.rs.html#731-733' title='goto source code'>[src]</a></span></h1><div class="important-traits"><div class='tooltip'>ⓘ<span class='tooltiptext'>Important traits for <a class="struct" href="../../std/env/struct.ArgsOs.html" title="struct std::env::ArgsOs">ArgsOs</a></span></div><div class="content hidden"><h3 class="important">Important traits for <a class="struct" href="../../std/env/struct.ArgsOs.html" title="struct std::env::ArgsOs">ArgsOs</a></h3><code class="content"><span class="where fmt-newline">impl <a class="trait" href="../../std/iter/trait.Iterator.html" title="trait std::iter::Iterator">Iterator</a> for <a class="struct" href="../../std/env/struct.ArgsOs.html" title="struct std::env::ArgsOs">ArgsOs</a></span><span class="where fmt-newline"> type <a href='../../std/iter/trait.Iterator.html#associatedtype.Item' class="type">Item</a> = <a class="struct" href="../../std/ffi/struct.OsString.html" title="struct std::ffi::OsString">OsString</a>;</span></code></div></div><pre class='rust fn'>pub fn args_os() -> <a class="struct" href="../../std/env/struct.ArgsOs.html" title="struct std::env::ArgsOs">ArgsOs</a></pre><div class='docblock'><p>Returns the arguments which this program was started with (normally passed
via the command line).</p>
<p>The first element is traditionally the path of the executable, but it can be
set to arbitrary text, and it may not even exist, so this property should
not be relied upon for security purposes.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">env</span>;
<span class="comment">// Prints each argument on a separate line</span>
<span class="kw">for</span> <span class="ident">argument</span> <span class="kw">in</span> <span class="ident">env</span>::<span class="ident">args_os</span>() {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">argument</span>);
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Afn%20main()%20%7B%0Ause%20std%3A%3Aenv%3B%0A%0A%2F%2F%20Prints%20each%20argument%20on%20a%20separate%20line%0Afor%20argument%20in%20env%3A%3Aargs_os()%20%7B%0A%20%20%20%20println!(%22%7B%3A%3F%7D%22%2C%20argument)%3B%0A%7D%0A%7D">Run</a></pre>
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