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@subsection Goals
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This section exists to organize files related to @code{shell}
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functionality of @file{centos-art.sh} script.
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@subsection Description
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The @code{shell} functionality of @file{centos-art.sh} script helps
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you to maintain bash scripts inside repository. For example, suppose
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you've created many functionalities for @file{centos-art.sh} script,
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and you want to use a common copyright and license note for
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consistency in all your script files. If you have a bunch of files,
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doing this one by one wouldn't be a big deal. In contrast, if the
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amount of files grows, updating the copyright and license note for all
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of them would be a task rather tedious. The @code{shell} functionality
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exists to solve maintainance tasks just as the one previously
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mentioned.
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When you use @code{shell} functionality to update copyright inside
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script files, it is required that your script files contain (at least)
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the following top commentary structure:
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@float Figure,fig:trunk/Scripts/Bash/Functions/Shell:1
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@verbatim
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1| #!/bin/bash
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2| #
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3| # doSomething.sh -- The function description goes here.
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4| #
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5| # Copyright
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6| #
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7| # ...
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8| #
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9| # ----------------------------------------------------------------------
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10| # $Id$
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11| # ----------------------------------------------------------------------
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12|
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13| function doSomething {
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14|
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15| }
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@end verbatim
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@caption{The functions script base comment structure}
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@end float
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Relevant lines in the above structure are lines from 5 to 9.
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Everything else in the file is left immutable.
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When you are updating copyright through @code{shell}
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functionality, the @file{centos-art.sh} script replaces everything
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in-between line 5 ---the first one matching @samp{^# Copyright .+$}
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string--- and line 9---the first long dash separator matching @samp{^#
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-+$}--- with the content of copyright template instance.
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@quotation
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@strong{Caution} Be sure to add the long dash separator that matches
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@samp{^# -+$} regular expression @emph{before} the function
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definition. Otherwise, if the @samp{Copyright} line is present but no
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long dash separator exists, @file{centos-art.sh} will remove anything
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in-between the @samp{Copyright} line and the end of file. This way you
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may lost your function definitions entirely.
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@end quotation
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The copyright template instance is created from one copyright template
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stored in the @file{Config/tpl_forCopyright.sed} file. The template
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instance is created once, and later removed when no longer needed. At
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this moment, when template instance is created, the
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@file{centos-art.sh} script takes advantage of automation in order to
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set copyright full name and date dynamically.
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When you use @code{shell} functionality to update copyright, the first
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thing @file{shell} functionality does is requesting copyright
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information to user, and later, if values were left empty (i.e., no
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value was typed before pressing @key{RET} key), the @file{shell}
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functionality uses its own default values.
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When @code{shell} functionality uses its own default values, the final
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copyright note looks like the following:
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@float Figure,fig:trunk/Scripts/Bash/Functions/Shell:2
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@verbatim
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1| #!/bin/bash
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2| #
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3| # doSomthing.sh -- The function description goes here.
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4| #
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5| # Copyright (C) 2003, 2010 The CentOS Project
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6| #
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7| # This program is free software; you can redistribute it and/or modify
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8| # it under the terms of the GNU General Public License as published by
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9| # the Free Software Foundation; either version 2 of the License, or
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10| # (at your option) any later version.
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11| #
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12| # This program is distributed in the hope that it will be useful, but
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13| # WITHOUT ANY WARRANTY; without even the implied warranty of
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14| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15| # General Public License for more details.
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16| #
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17| # You should have received a copy of the GNU General Public License
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18| # along with this program; if not, write to the Free Software
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19| # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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20| # USA.
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21| #
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22| # ----------------------------------------------------------------------
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23| # $Id$
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24| # ----------------------------------------------------------------------
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25|
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26| function doSomething {
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27|
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28| }
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@end verbatim
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@caption{The function script comment example}
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@end float
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Relevant lines in the above structure are lines from 5 to 22. Pay
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attention how the copyright line was built, and how the license was
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added into the top comment where previously was just three dots.
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Everything else in the file was left immutable.
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To change copyright information (i.e., full name or year information),
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run the @code{shell} functionality over the root directory containing
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the script files you want to update copyright in and enter the
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appropriate information when it be requested. You can run the
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@code{shell} functionality as many times as you need to.
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To change copyright license (i.e., the text in-between lines 7 and
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20), you need to edit the @file{Config/tpl_forCopyright.sed} file, set
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the appropriate information, and run the @code{shell} functionality
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once again for changes to take effect over the files you specify.
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@quotation
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@strong{Important} The @file{centos-art.sh} script is released as:
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@verbatim
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GNU GENERAL PUBLIC LICENSE
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Version 2, June 1991
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Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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@end verbatim
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Do not change the license information under which @file{centos-art.sh}
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script is released. Instead, if you think a different license must be
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used, please share your reasons at @email{centos-devel@@centos-art.sh,
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CentOS Developers mailing list}.
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@end quotation
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@subsection Usage
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@table @command
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@item centos-art sh --update-copyright='path/to/dir'
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@itemx centos-art sh --update-copyright='path/to/dir' --filter='regex'
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Use these commands to update copyright information in @samp{.sh} files
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under @samp{path/to/dir} directory.
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@end table
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When you provide @option{--filter='regex'} argument, the list of files
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to process is reduced as specified in @samp{regex} regular expression.
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Inside @file{centos-art.sh} script, the @samp{regex} regular
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expression is used in combination with @command{find} command to look
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for files matching the regular expression path pattern.
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@quotation
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@strong{Warning} In order for @samp{regex} regular expression to match
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a file, the @samp{regex} regular expresion must match the whole file
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path not just the file name.
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@end quotation
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For example, if you want to match all @file{render.conf.sh} files
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inside @file{path/to/dir}, use the @code{.+/render.conf} regular
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expression. Later, @file{centos-art.sh} script uses this value inside
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@code{^$REGEX\.sh$} expression in order to build the final regular
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expression (i.e., @code{^.+/render.conf\.sh$}) that is evaluated
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against available file paths inside the list of files to process.
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9c6e0d |
Exceptionally, when you provide @option{--filter='regex'} in the way
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that @samp{regex}, appended to @samp{path/to/dir/} (i.e.
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9c6e0d |
@samp{path/to/dir/regex}), matches a regular file; the
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@file{centos-art.sh} script uses the file matching as only file in the
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list of files to process.
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9c6e0d |
@subsection See also
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9c6e0d |
@menu
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1856b7 |
* Repository trunk Scripts Bash::
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1856b7 |
@comment --- Removed(* Repository trunk Scripts Bash Functions::) ---
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@end menu
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