Home Files
Adminer
Execute Command
PHP Eval
Symlink
File Upload
Owner :
www-data
PHP Version
5.6.40-0+deb8u12
Disk Space
40.97 GB
Server Addr
19-www4
Your IP
10.10.10.40
Edit File
File:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Dependency resolution in aptitude</title><link rel="stylesheet" type="text/css" href="aptitude.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="aptitude user's manual"><link rel="up" href="ch02s03.html" title="Resolving package dependencies"><link rel="prev" href="ch02s03.html" title="Resolving package dependencies"><link rel="next" href="ch02s03s02.html" title="Immediate dependency resolution"><link rel="preface" href="pr01.html" title="Introduction"><link rel="chapter" href="ch01.html" title="Chapter 1. Getting started"><link rel="chapter" href="ch02.html" title="Chapter 2. aptitude reference guide"><link rel="chapter" href="ch03.html" title="Chapter 3. aptitude frequently asked questions"><link rel="chapter" href="ch04.html" title="Chapter 4. Credits"><link rel="reference" href="rn01.html" title="Command-line reference"><link rel="refentry" href="rn01re01.html" title="aptitude"><link rel="refentry" href="rn01re02.html" title="aptitude-create-state-bundle"><link rel="refentry" href="rn01re03.html" title="aptitude-run-state-bundle"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Dependency resolution in <span class="command"><strong>aptitude</strong></span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch02s03.html"><img src="images/prev.gif" alt="Prev"></a> </td><th width="60%" align="center">Resolving package dependencies</th><td width="20%" align="right"> <a accesskey="n" href="ch02s03s02.html"><img src="images/next.gif" alt="Next"></a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="idp57401200"></a>Dependency resolution in <span class="command"><strong>aptitude</strong></span></h3></div></div></div><p> There are two main dependency resolution algorithms in <span class="command"><strong>aptitude</strong></span>. </p><p> The first is an algorithm that is also used by programs such as <span class="command"><strong>apt-get</strong></span> and <span class="command"><strong>synaptic</strong></span>; I will call it <span class="quote">“<span class="quote">immediate resolution</span>”</span>. It is invoked whenever you select a package for installation interactively, and immediately after one or more packages are marked for installation at the command-line. Immediate resolution is fast and will solve most dependency problems, but it is sometimes unable to find any solution. </p><p> The second algorithm, which I will call <span class="quote">“<span class="quote">interactive resolution</span>”</span>, is invoked when packages have broken dependencies even after immediate resolution<a href="#ftn.idp57406592" class="footnote" name="idp57406592"><sup class="footnote">[11]</sup></a>. It can resolve more dependencies, it allows you to review a solution before applying it, and it allows you to provide feedback to the resolver, guiding it towards a better solution. </p><div class="footnotes"><br><hr style="width:100; text-align:left;margin-left: 0"><div id="ftn.idp57406592" class="footnote"><p><a href="#idp57406592" class="para"><sup class="para">[11] </sup></a>Or when immediate resolution is disabled.</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch02s03.html"><img src="images/prev.gif" alt="Prev"></a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s03.html"><img src="images/up.gif" alt="Up"></a></td><td width="40%" align="right"> <a accesskey="n" href="ch02s03s02.html"><img src="images/next.gif" alt="Next"></a></td></tr><tr><td width="40%" align="left" valign="top">Resolving package dependencies </td><td width="20%" align="center"><a accesskey="h" href="index.html"><img src="images/home.gif" alt="Home"></a></td><td width="40%" align="right" valign="top"> Immediate dependency resolution</td></tr></table></div></body></html>