139 lines
5.8 KiB
Markdown
139 lines
5.8 KiB
Markdown
[](https://travis-ci.org/aspiers/stow)
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[](https://coveralls.io/github/aspiers/stow?branch=master)
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README for GNU Stow
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===================
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This README describes GNU Stow. This is not the definitive
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documentation for Stow; for that, see the [info
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manual](https://www.gnu.org/software/stow/manual/).
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Stow is a symlink farm manager program which takes distinct sets
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of software and/or data located in separate directories on the
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filesystem, and makes them all appear to be installed in a single
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directory tree.
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Originally Stow was born to address the need to administer, upgrade,
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install, and remove files in independent software packages without
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confusing them with other files sharing the same file system space.
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For instance, many years ago it used to be common to compile programs
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such as Perl and Emacs from source and install them in `/usr/local`.
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By using Stow, `/usr/local/bin` could contain symlinks to files within
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`/usr/local/stow/emacs/bin`, `/usr/local/stow/perl/bin` etc., and
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likewise recursively for any other subdirectories such as `.../share`,
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`.../man`, and so on.
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While this is useful for keeping track of system-wide and per-user
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installations of software built from source, in more recent times
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software packages are often managed by more sophisticated package
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management software such as
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[`rpm`](https://en.wikipedia.org/wiki/Rpm_(software)),
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[`dpkg`](https://en.wikipedia.org/wiki/Dpkg), and
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[Nix](https://en.wikipedia.org/wiki/Nix_package_manager) / [GNU
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Guix](https://en.wikipedia.org/wiki/GNU_Guix), or language-native
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package managers such as Ruby's
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[`gem`](https://en.wikipedia.org/wiki/RubyGems), Python's
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[`pip`](https://en.wikipedia.org/wiki/Pip_(package_manager)),
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Javascript's [`npm`](https://en.wikipedia.org/wiki/Npm_(software)),
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and so on.
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However Stow is still used not only for software package management,
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but also for other purposes, such as facilitating [a more controlled
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approach to management of configuration files in the user's home
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directory](http://brandon.invergo.net/news/2012-05-26-using-gnu-stow-to-manage-your-dotfiles.html),
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especially when [coupled with version control
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systems](http://lists.gnu.org/archive/html/info-stow/2011-12/msg00000.html).
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Stow was inspired by Carnegie Mellon's Depot program, but is
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substantially simpler and safer. Whereas Depot required database files
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to keep things in sync, Stow stores no extra state between runs, so
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there's no danger (as there was in Depot) of mangling directories when
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file hierarchies don't match the database. Also unlike Depot, Stow will
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never delete any files, directories, or links that appear in a Stow
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directory (e.g., `/usr/local/stow/emacs`), so it's always possible
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to rebuild the target tree (e.g., `/usr/local`).
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Stow is implemented as a combination of a Perl script providing a CLI
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interface, and a backend Perl module which does most of the work.
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You can get the latest information about Stow from the home page:
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http://www.gnu.org/software/stow/
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Installation
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------------
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See [`INSTALL.md`](INSTALL.md) for installation instructions.
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Documentation
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-------------
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Documentation for Stow is available
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[online](https://www.gnu.org/software/stow/manual/), as is
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[documentation for most GNU
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software](https://www.gnu.org/software/manual/). Once you have Stow
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installed, you may also find more information about Stow by running
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`info stow` or `man stow`, or by looking at `/usr/share/doc/stow/`,
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`/usr/local/doc/stow/`, or similar directories on your system. A
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brief summary is available by running `stow --help`.
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Mailing lists
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-------------
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Stow has the following mailing lists:
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- [help-stow](https://lists.gnu.org/mailman/listinfo/help-stow) is for
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general user help and discussion.
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- [stow-devel](https://lists.gnu.org/mailman/listinfo/stow-devel) is
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used to discuss most aspects of Stow, including development and
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enhancement requests.
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- [bug-stow](https://lists.gnu.org/mailman/listinfo/bug-stow) is for
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bug reports.
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Announcements about Stow are posted to
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[info-stow](http://lists.gnu.org/mailman/listinfo/info-stow) and also,
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as with most other GNU software, to
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[info-gnu](http://lists.gnu.org/mailman/listinfo/info-gnu)
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([archive](http://lists.gnu.org/archive/html/info-gnu/)).
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Security reports that should not be made immediately public can be
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sent directly to the maintainer. If there is no response to an urgent
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issue, you can escalate to the general
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[security](http://lists.gnu.org/mailman/listinfo/security) mailing
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list for advice.
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The Savannah project also has a [mailing
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lists](https://savannah.gnu.org/mail/?group=stow) page.
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Getting involved
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----------------
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Please see the [`CONTRIBUTING.md` file](CONTRIBUTING.md).
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License
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-------
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Stow is free software, licensed under the GNU General Public License,
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which can be found in the file [`COPYING`](COPYING).
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved. This file is offered as-is,
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without any warranty.
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Brief history and authorship
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----------------------------
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Stow was inspired by Carnegie Mellon's "Depot" program, but is
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substantially simpler. Whereas Depot requires database files to keep
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things in sync, Stow stores no extra state between runs, so there's no
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danger (as there is in Depot) of mangling directories when file
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hierarchies don't match the database. Also unlike Depot, Stow will
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never delete any files, directories, or links that appear in a Stow
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directory (e.g., `/usr/local/stow/emacs`), so it's always possible to
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rebuild the target tree (e.g., `/usr/local`).
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For a high-level overview of the contributions of the main developers
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over the years, see [the `AUTHORS` file](AUTHORS).
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For a more detailed history, please see the `ChangeLog` file.
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