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can you do inside it.
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Copyright C 2009, 2010 Alain Reguera Delgado. 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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Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
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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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<head>
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<title>CentOS Artwork Repository: 3.34 trunk/Scripts/Bash</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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[ > ]
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[ << ]
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[ Up ]
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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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3.34 trunk/Scripts/Bash
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3.34.1 Goals
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The <tt>`trunk/Scripts/Bash'</tt> directory exists to organize the trunk
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development line of <tt>`centos-art.sh'</tt> automation script. The
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<tt>`centos-art.sh'</tt> script standardizes frequent tasks inside your
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working copy of CentOS Artwork Repository.
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3.34.2 Description
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The best way to understand <tt>`centos-art.sh'</tt> automation script is
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studying its source code. The <tt>`centos-art.sh'</tt> script is splited
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in several configuration and function files which are loaded when the
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<tt>`centos-art.sh'</tt> script is executed. This section describes the
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order in which <tt>`centos-art.sh'</tt> loads its configuration and
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function files.
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When you type the centos-art command in your terminal, the
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operating system trys to execute that command. In order to execute the
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command, the operating system needs to know where it is, so the
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operating system uses the PATH environment variable to look for
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that command's location. If your system was prepared to use CentOS
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Artwork Repository correctly (see section trunk/Scripts/Bash/Functions/Verify), you should have a symbolic link inside <tt>`~/bin/'</tt>
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directory that points to the <tt>`centos-art.sh'</tt> script file. As
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<tt>`~/bin/'</tt> directory is, by default, inside PATH environment
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variable, the execution of centos-art command runs the
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<tt>`centos-art.sh'</tt> script.
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When <tt>`centos-art.sh'</tt> script is executed, the first it does is
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executing the <tt>`trunk/Scripts/Bash/initFunctions.sh'</tt> script to
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initialize global variables (e.g., gettext's variables) and
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global function scripts. Global function scripts are located inside
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<tt>`trunk/Scripts/Bash/Functions'</tt> directory and their file names
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begin with <samp>`cli'</samp>. Global function scripts provide common
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functionalities that can be used anywhere inside <tt>`centos-art.sh'</tt>
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script execution environment.
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Once global variables and function scripts have been loaded,
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<tt>`centos-art.sh'</tt> script executes the cli global function
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from <tt>`cli.sh'</tt> function script to retrive command-line arguments
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and define some default values that may be used later by specific
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function scripts (see section trunk/Scripts/Bash/Functions).
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As convenction, the <tt>`centos-art.sh'</tt> command-line arguments have
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the following format:
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centos-art arg1 --arg2=val2 --arg3=val3
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In the above example, <samp>`centos-art'</samp> is the command you use to
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invoke <tt>`centos-art.sh'</tt> script. The <samp>`arg1'</samp> represents the
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action you want to do (e.g., <samp>`verify'</samp>, <samp>`render'</samp>,
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<samp>`locale'</samp>, <samp>`help'</samp>, etc.). The remaining arguments are
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modifiers to <samp>`arg1'</samp>. The <samp>`--arg2'</samp> definition is
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required. The <samp>`--arg3'</samp> is optional. For example, if you want
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to render all anaconda progress slides, for all major releases of
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CentOS distribution, for all languages availabe using TreeFlower motif
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as background, you use the following command:
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centos-art render --entry=trunk/Identity/Themes/Motifs/TreeFlower/Distro/Anaconda/Progress
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Now, if you only want to render anaconda progress
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<tt>`01-welcome.png'</tt> slide, for CentOS distribution major release 5,
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in English language, you need to add the third argument as follows:
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centos-art render --entry=trunk/Identity/Themes/Motifs/TreeFlower/Distro/Anaconda/Progress --filter=5/en/01-welcome
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Once command-line arguments have been retrived, the
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<tt>`centos-art.sh'</tt> script loads specific functions using the
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<tt>`cli_getActions.sh'</tt> function script. For example, if you run the
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command centos-art render --entry, the <tt>`centos-art.sh'</tt>
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script will look for <tt>`trunk/Scripts/Bash/Functions/Render'</tt>
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directory and will load the render function from
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<tt>`render.sh'</tt> function script; this, in order to achive the
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rendering task as it defines.
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+------------------------------------------------------------------+
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| [centos@host]$ centos-art action 'path/to/dir' --option='value' |
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+------------------------------------------------------------------+
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| ~/bin/centos-art --> ~/artwork/trunk/Scripts/Bash/centos-art.sh |
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+---v-----------------------------------------v--------------------+
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| centos-art.sh |
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+---v---------------------------------v---+
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. | initFunctions.sh | .
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. +---------------------------------+ .
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. | cli $@ | .
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. +---v-------------------------v---+ .
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. . | cli_getActions $@ | . .
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. . +---v-----------------v---+ . .
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. . . | function call 1 | . . .
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. . . | function call 2 | . . .
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. . . | function call n | . . .
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. . . +-----------------+ . . .
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. . ........................... . .
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. ................................... .
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...........................................
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Figure 3.5: The <tt>`centos-art.sh'</tt> initialization environment.
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3.34.3 Usage
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The <tt>`centos-art.sh'</tt> script usage information is described inside
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each specific function documentation (see section trunk/Scripts/Bash/Functions).
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3.34.4 See also
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3.33 trunk/Scripts
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3.35 trunk/Scripts/Bash/Functions
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3.45 trunk/Scripts/Bash/Locale
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[ < ]
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<font size="-1">
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</font>
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</body>
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</html>
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