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can you do inside it.
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Copyright C 2009, 2010 CentOS Artwork SIG. All rights
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reserved.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.2 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
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copy of the license is included in the section entitled GNU Free
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Documentation License.
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-->
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Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
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Karl Berry <karl@freefriends.org>
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Olaf Bachmann <obachman@mathematik.uni-kl.de>
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and many others.
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Maintained by: Many creative people <dev@texi2html.cvshome.org>
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-->
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<head>
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<title>CentOS Artwork Repository: 3.44 trunk/Scripts/Bash/Functions/Verify</title>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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[ < ]
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[Top]
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[Contents]
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[Index]
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[ ? ]
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3.44 trunk/Scripts/Bash/Functions/Verify
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3.44.1 Goals
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This section exists to organize files related to "verify"
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functionality of <tt>`centos-art.sh'</tt> script. The "verify"
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functionality of <tt>`centos-art.sh'</tt> script helps you to prepare the
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workstation you are planning to use <tt>`centos-art.sh'</tt> script.
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3.44.2 Description
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The first time you download CentOS Artwork Repository you need to
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configure your workstation in order to use <tt>`centos-art.sh'</tt>
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script. These preliminar configurations are based mainly on auxiliar
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RPM packages installation, symbolic links creations, and environment
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variables definitions. The "verify" functionality of
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<tt>`centos-art.sh'</tt> script guides you through this preliminar
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configuration process.
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If this is the first time you run centos-art command, the
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appropriate way to use its "verify" functionality is not using the
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centos-art command directly, but the absolute path to
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centos-art.sh script instead (i.e.,
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<tt>`~/artwork/trunk/Scripts/Bash/centos-art.sh'</tt>). This is necessary
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because centos-art symbolic link, under <tt>`~/bin/'</tt>
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directory, has not been created yet.
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3.44.2.1 Packages
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Installation of auxiliar RPM packages provides the software required
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to manipulate files inside the repository (e.g., image files,
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documentation files, translation files, script files, etc.). Most of
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RPM packages centos-art.sh script uses are shipped with
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CentOS distribution, and can be installed from CentOS base repository.
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The only exception is <samp>`inkscape'</samp>, the package we use to
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manipulate SVG files. The <samp>`inkscape'</samp> package is not inside
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CentOS distribution so it needs to be installed from third party
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repositories.
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 Note Configuration of third party repositories inside CentOS
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distribution is described in CentOS wiki, specifically in the
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following URL:
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http://wiki.centos.org/AdditionalResources/Repositories
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Before installing packages, the <tt>`centos-art.sh'</tt> script uses
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sudo to request root privileges to execute yum's
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installation functionality. If your user isn't defined as a
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privileged user--at least to run yum commands-- inside
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<tt>`/etc/sudoers'</tt> configuration file, you will not be able to
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perform package installation tasks as set in <tt>`centos-art.sh'</tt>
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script "verify" functionality.
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Setting sudo privileges to users is an administrative task you have to
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do by yourself. If you don't have experience with sudo
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command, please read its man page running the command: man
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sudo. This reading will be very useful, and with some practice, you
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will be able to configure your users to have sudo
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privileges.
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3.44.2.2 Links
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Creation of symbolic links helps us to alternate between different
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implementations of centos-art command-line (e.g.,
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<tt>`centos-art.sh'</tt>, for Bash implementation; <tt>`centos-art.py'</tt>,
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for Python implementation; <tt>`centos-art.pl'</tt>, for Perl
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implementation; and so on for other implementations). The
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centos-art command-line definition takes place inside your
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personal binary (<tt>`~/bin/'</tt>) directory in order to make the script
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implementation --the one that centos-art links to--
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available to PATH environment variable.
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Creation of symbolic links helps us to reuse components from repository
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working copy. For example, color information files maintained inside
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your working copy must never be duplicated inside program-specific
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configuration directories that uses them in your workstation (e.g.,
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Gimp, Inkscape, etc.). Instead, a symbolic link must be created for
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each one of them, from program-specific configuration directories to
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files in the working copy. In this configuration, when someone
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commits changes to color information files up to central repository,
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they--the changes committed-- will be immediatly available to your
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programs the next time you update your working copy --the place
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inside your workstation those color information files are stored--.
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Creation of symbolic links helps us to make <tt>`centos-art.sh'</tt>
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script functionalities available outside <tt>`trunk/'</tt> repository
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directory structure, but at its same level in repository tree. This is
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useful if you need to use the "render" functionality of
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centos-art.sh under <tt>`branches/'</tt> repository directory
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structure as you usually do inside <tt>`trunk/'</tt> repository directory
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structure. As consequence of this configuration, automation scripts
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cannot be branched under <tt>`branches/Scripts'</tt> directory structure.
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3.44.2.3 Environment variables
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Definition of environemnt variables helps us to set default values to
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our user session life. The user session environment variable defintion
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takes place in the user's <tt>`~/.bash_profile'</tt> file. The "verify"
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functionality of <tt>`centos-art.sh'</tt> script doesn't modify your
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<tt>`~/.bash_profile'</tt> file.
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The "verify" functionality of <tt>`centos-art.sh'</tt> script evaluates
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the following environment variables:
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Default text editor (EDITOR)
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The EDITOR environment variable defines your user session
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default text editor.
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If EDITOR environment variable is not set --or it uses one
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value other than <tt>`/usr/bin/vim'</tt>, <tt>`/usr/bin/emacs'</tt>, or
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<tt>`/usr/bin/nano'</tt>-- the <tt>`centos-art.sh'</tt> script uses
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<tt>`/usr/bin/vim'</tt> as default text editor.
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Default text editor is used by <tt>`centos-art.sh'</tt> script whenever it
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needs to edit text-based files (e.g., subversion's pre-commit
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messages, translation files, configuration files, script files, etc.)
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Default time representation (TZ)
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The TZ environment variable defines your user session default
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time zone representation.
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Time representation inside repository server is set to Coordinated
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Universal Time (UTC). Time represetation inside repository working
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copies is set as their administrators personally define.
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When repository working copies time representation be defined, it
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would be a very good convention to follow if working copies
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administrators would set their systems clock to use UTC. Otherwise it
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would be difficult for working copies users to find out when changes
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were committed up to repository server exactly in time.
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 Tip Coordinated Univeral Time (UTC) representation can be
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configured when you install CentOS distribution, or later in your
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graphical interface using the following command:
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system-config-date
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Note If you set your system clock to use UTC representation,
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you also need to set the TZ environment variable inside
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<tt>`~/.bash_profile'</tt> as follows:
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export TZ=UTC
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This is required in order for your terminal to display the correct
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time information of your zone, taking UTC representation as reference.
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3.44.3 Usage
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<samp>`centos-art verify --packages'</samp>
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This command verifies required packages your workstation needs in
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order to run the centos-art command correctly. If there are
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missing packages, the <tt>`centos-art.sh'</tt> script asks you to confirm
|
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their installation. When installing packages, the <tt>`centos-art.sh'</tt>
|
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script uses the yum application in order to achieve the
|
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task.
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<samp>`centos-art verify --links'</samp>
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This command verifies required links your workstation needs in order
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to run the centos-art command correctly. If there are
|
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missing links, the <tt>`centos-art.sh'</tt> script asks you to confirm
|
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their creation. When creating links, the <tt>`centos-art.sh'</tt> script
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uses the ln application in order to achieve the task.
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<samp>`centos-art verify --environment'</samp>
|
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This command verifies required environment variables your workstation
|
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needs in order to run centos-art command correctly. If
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environment variables evaluated by <tt>`centos-art.sh'</tt> script are
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emtpy, the <tt>`centos-art.sh'</tt> script informs you about it and
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nothing else happens.
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3.44.4 See also
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3.35 trunk/Scripts/Bash/Functions
|
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[ < ]
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[ > ]
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[ << ]
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[ Up ]
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[ >> ]
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<font size="-1">
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This document was generated on October, 31 2010 using texi2html 1.76.
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</font>
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</body>
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</html>
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