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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>Running GIO applications</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GIO Reference Manual"><link rel="up" href="pt01.html" title="Part I. GIO Overview"><link rel="prev" href="ch02.html" title="Compiling GIO applications"><link rel="next" href="gio-extension-points.html" title="Extending GIO"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="pt01.html" title="Part I. GIO Overview"><link rel="chapter" href="ch01.html" title="Introduction"><link rel="chapter" href="ch02.html" title="Compiling GIO applications"><link rel="chapter" href="ch03.html" title="Running GIO applications"><link rel="chapter" href="gio-extension-points.html" title="Extending GIO"><link rel="part" href="pt02.html" title="Part II. API Reference"><link rel="chapter" href="file_ops.html" title="File Operations"><link rel="chapter" href="file_mon.html" title="File System Monitoring"><link rel="chapter" href="async.html" title="Asynchronous I/O"><link rel="chapter" href="streaming.html" title="Streaming I/O"><link rel="chapter" href="types.html" title="File types and applications"><link rel="chapter" href="volume_mon.html" title="Volumes and Drives"><link rel="chapter" href="icons.html" title="Icons"><link rel="chapter" href="utils.html" title="Utilities"><link rel="chapter" href="extending.html" title="Extending GIO"><link rel="part" href="migrating.html" title="Part III. Migrating to GIO"><link rel="chapter" href="ch14.html" title="Migrating from POSIX to GIO"><link rel="chapter" href="ch15.html" title="Migrating from GnomeVFS to GIO"><link rel="chapter" href="gio-hierarchy.html" title="Object Hierarchy"><link rel="index" href="ix01.html" title="Index"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="ch02.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="pt01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">GIO Reference Manual</th><td><a accesskey="n" href="gio-extension-points.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr></table><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="id3041105"></a>Running GIO applications</h2></div></div></div><p> GIO inspects a few of environment variables in addition to the ones used by GLib. </p><p><b><code class="envar">XDG_DATA_HOME</code>, <code class="envar">XDG_DATA_DIRS</code>. </b> GIO uses these environment variables to locate MIME information. For more information, see the <a class="ulink" href="http://freedesktop.org/Standards/shared-mime-info-spec" target="_top">Shared MIME-info Database</a> and the <a class="ulink" href="http://freedesktop.org/Standards/basedir-spec" target="_top">Base Directory Specification</a>. </p><p> The following environment variables are only useful for debugging GIO itself or modules that it loads. They should not be set in a production environment. </p><p><b><code class="envar">GIO_USE_VFS</code>. </b> This environment variable can be set to the name of a <a class="link" href="GVfs.html" title="GVfs"><span class="type">GVfs</span></a> implementation to override the default for debugging purposes. The <a class="link" href="GVfs.html" title="GVfs"><span class="type">GVfs</span></a> implementation for local files that is included in GIO has the name "local", the implementation in the gvfs module has the name "gvfs". </p><p><b><code class="envar">GIO_USE_VOLUME_MONITOR</code>. </b> This variable can be set to the name of a <a class="link" href="GVolumeMonitor.html" title="GVolumeMonitor"><span class="type">GVolumeMonitor</span></a> implementation to override the default for debugging purposes. The <a class="link" href="GVolumeMonitor.html" title="GVolumeMonitor"><span class="type">GVolumeMonitor</span></a> implementation for local files that is included in GIO has the name "unix", the hal-based implementation in the gvfs module has the name "hal". </p><p><b><code class="envar">GIO_USE_URI_ASSOCIATION</code>. </b> This variable can be set to the name of a <a class="link" href="gio-Desktop-file-based-GAppInfo.html#GDesktopAppInfoLookup"><span class="type">GDesktopAppInfoLookup</span></a> implementation to override the dfeault for debugging purposes. GIO does not include a <a class="link" href="gio-Desktop-file-based-GAppInfo.html#GDesktopAppInfoLookup"><span class="type">GDesktopAppInfoLookup</span></a> implementation, the GConf-based implementation in the gvfs module has the name "gconf". </p><p><b><code class="envar">GVFS_INOTIFY_DIAG</code>. </b> When this environment variable is set and GIO has been built with inotify support, a dump of diagnostic inotify information will be written every 20 seconds to a file named <code class="filename">/tmp/gvfsdid.<em class="replaceable"><code>pid</code></em></code>. </p></div></body></html>⌨️ 快捷键说明
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