113 lines
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113 lines
5.6 KiB
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<title>Deleting Packages - Stow</title>
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<!--
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This manual describes GNU Stow version 2.2.2
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(9 November 2015), a program for managing the installation of software
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packages.
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Software and documentation is copyrighted by the following:
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(C) 1993, 1994, 1995, 1996 Bob Glickstein <bobg+stow@zanshin.com>
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(C) 2000, 2001 Guillaume Morin <gmorin@gnu.org>
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(C) 2007 Kahlil (Kal) Hodgson <kahlil@internode.on.net>
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(C) 2011 Adam Spiers <stow@adamspiers.org>
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Permission is granted to make and distribute verbatim copies of
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notice are preserved on all copies.
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also that the section entitled ``GNU General Public License'' is
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resulting derived work is distributed under the terms of a
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permission notice identical to this one.
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<a name="Deleting-Packages"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Conflicts.html#Conflicts">Conflicts</a>,
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Previous: <a rel="previous" accesskey="p" href="Installing-Packages.html#Installing-Packages">Installing Packages</a>,
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Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a>
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<hr>
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</div>
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<h2 class="chapter">6 Deleting Packages</h2>
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<p><a name="index-deletion-28"></a>When the <samp><span class="option">-D</span></samp> option is given, the action of Stow is to
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delete a package from the target tree. Note that Stow will not
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delete anything it doesn't “own”. Deleting a package does <em>not</em>
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mean removing it from the stow directory or discarding the package
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tree.
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<p>To delete a package, Stow recursively scans the target tree, skipping over any
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directory that is not included in the installation image.<a rel="footnote" href="#fn-1" name="fnd-1"><sup>1</sup></a>
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For example, if the target directory is <samp><span class="file">/usr/local</span></samp> and the
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installation image for the package being deleted has only a <samp><span class="file">bin</span></samp>
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directory and a <samp><span class="file">man</span></samp> directory at the top level, then we only scan
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<samp><span class="file">/usr/local/bin</span></samp> and <samp><span class="file">/usr/local/bin/man</span></samp>, and not
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<samp><span class="file">/usr/local/lib</span></samp> or <samp><span class="file">/usr/local/share</span></samp>, or for that matter
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<samp><span class="file">/usr/local/stow</span></samp>. Any symlink it finds that points into the package
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being deleted is removed. Any directory that contained only symlinks to the
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package being deleted is removed.
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<p><a name="tree-refolding"></a>
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<h3 class="section">6.1 Refolding “foldable” trees.</h3>
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<p><a name="index-refolding-trees-29"></a><a name="index-tree-refolding-30"></a>
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After removing symlinks and empty subdirectories, any directory that
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contains only symlinks to a single other package is considered to be a
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previously “folded” tree that was “split open.” Stow will refold
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the tree by removing the symlinks to the surviving package, removing
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the directory, then linking the directory back to the surviving
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package. However, this behaviour can be prevented via the
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<samp><span class="option">--no-folding</span></samp> option; see <a href="Invoking-Stow.html#Invoking-Stow">Invoking Stow</a>.
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<!-- =========================================================================== -->
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<div class="footnote">
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<hr>
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<h4>Footnotes</h4><p class="footnote"><small>[<a name="fn-1" href="#fnd-1">1</a>]</small> This
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approach was introduced in version 2 of GNU Stow. Previously, the whole
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target tree was scanned and stow directories were explicitly omitted. This
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became problematic when dealing with very large installations. The only
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situation where this is useful is if you accidentally delete a directory in
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the package tree, leaving you with a whole bunch of dangling links. Note that
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you can enable the old approach with the <samp><span class="option">-p</span></samp> option. Alternatively, you can
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use the <samp><span class="option">--badlinks</span></samp> option get stow to search for dangling links in your target tree and remove the offenders manually.</p>
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<hr></div>
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