<?xml version="1.0" encoding="utf-8" standalone="no"?> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [ <!ENTITY % aptent SYSTEM "apt.ent"> %aptent; ]> <refentry> <refentryinfo> &apt-author.jgunthorpe; &apt-author.team; &apt-email; &apt-product; <!-- The last update date --> <date>29 February 2004</date> </refentryinfo> <refmeta> <refentrytitle>apt-config</refentrytitle> <manvolnum>8</manvolnum> </refmeta> <!-- Man page title --> <refnamediv> <refname>apt-config</refname> <refpurpose>APT Configuration Query program</refpurpose> </refnamediv> <!-- Arguments --> <refsynopsisdiv> <cmdsynopsis> <command>apt-config</command> <arg><option>-hv</option></arg> <arg><option>-o=<replaceable>config string</replaceable></option></arg> <arg><option>-c=<replaceable>file</replaceable></option></arg> <group choice="req"> <arg>shell</arg> <arg>dump</arg> </group> </cmdsynopsis> </refsynopsisdiv> <refsect1><title>Description</title> <para><command>apt-config</command> is an internal program used by various portions of the APT suite to provide consistent configurability. It accesses the main configuration file <filename>/etc/apt/apt.conf</filename> in a manner that is easy to use by scripted applications.</para> <para>Unless the <option>-h</option>, or <option>--help</option> option is given one of the commands below must be present. </para> <variablelist> <varlistentry><term>shell</term> <listitem><para> shell is used to access the configuration information from a shell script. It is given pairs of arguments, the first being a shell variable and the second the configuration value to query. As output it lists a series of shell assignments commands for each present value. In a shell script it should be used like: </para> <informalexample><programlisting> OPTS="-f" RES=`apt-config shell OPTS MyApp::options` eval $RES </programlisting></informalexample> <para>This will set the shell environment variable $OPTS to the value of MyApp::options with a default of <option>-f</option>.</para> <para>The configuration item may be postfixed with a /[fdbi]. f returns file names, d returns directories, b returns true or false and i returns an integer. Each of the returns is normalized and verified internally.</para> </listitem> </varlistentry> <varlistentry><term>dump</term> <listitem><para> Just show the contents of the configuration space.</para> </listitem> </varlistentry> </variablelist> </refsect1> <refsect1><title>options</title> &apt-cmdblurb; <variablelist> &apt-commonoptions; </variablelist> </refsect1> <refsect1><title>See Also</title> <para>&apt-conf; </para> </refsect1> <refsect1><title>Diagnostics</title> <para><command>apt-config</command> returns zero on normal operation, decimal 100 on error. </para> </refsect1> &manbugs; </refentry>