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<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="API documentation for the Rust `execv` fn in crate `nix`."><metaname="keywords"content="rust, rustlang, rust-lang, execv"><title>nix::unistd::execv - Rust</title><linkrel="stylesheet"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../dark.css"><linkrel="stylesheet"type="text/css"href="../../light.css"id="themeStyle"><scriptsrc="../../storage.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="shortcut icon"href="../../favicon.ico"><styletype="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><bodyclass="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu">☰</div><ahref='../../nix/index.html'><divclass='logo-container'><imgsrc='../../rust-logo.png'alt='logo'></div></a><divclass="sidebar-elems"><pclass='location'><ahref='../index.html'>nix</a>::<wbr><ahref='index.html'>unistd</a></p><script>window.sidebarCurrent={name:'execv',ty:'fn',relpath:''};</script><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"><imgsrc="../../brush.svg"width="18"alt="Pick another theme!"></button><divid="theme-choices"></div></div><scriptsrc="../../theme.js"></script><navclass="sub"><formclass="search-form js-only"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"></div><aid="settings-menu"href="../../settings.html"><imgsrc="../../wheel.svg"width="18"alt="Change settings"></a></div></form></nav><sectionid="main"class="content"><h1class='fqn'><spanclass='out-of-band'><spanid='render-detail'><aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass='inner'>−</span>]</a></span><aclass='srclink'href='../../src/nix/unistd.rs.html#677-685'title='goto source code'>[src]</a></span><spanclass='in-band'>Function <ahref='../index.html'>nix</a>::<wbr><ahref='index.html'>unistd</a>::<wbr><aclass="fn"href=''>execv</a></span></h1><preclass='rust fn'>pub fn execv(path: &<aclass="struct"href="https://doc.rust-lang.org/nightly/std/ffi/c_str/struct.CString.html"title="struct std::ffi::c_str::CString">CString</a>, argv: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&[</a><aclass="struct"href="https://doc.rust-lang.org/nightly/std/ffi/c_str/struct.CString.html"title="struct std::ffi::c_str::CString">CString</a><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -><aclass="type"href="../../nix/type.Result.html"title="type nix::Result">Result</a><<aclass="enum"href="../../void/enum.Void.html"title="enum void::Void">Void</a>></pre><divclass='docblock'><p>Replace the current process image with a new one (see
<p>See the <code>::nix::unistd::execve</code> system call for additional details. <code>execv</code>
performs the same action but does not allow for customization of the
environment for the new process.</p>
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