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Full Discussion: Grab XML attributes from file with bash script
Top Forums Shell Programming and Scripting Grab XML attributes from file with bash script Post 303045636 by joddclaude on Sunday 5th of April 2020 08:15:48 AM
Old 04-05-2020
Grab XML attributes from file with bash script
Hi,

I need to grab attributes from the XML file with pure bash script.

So I have the following XML file with a root element `Group` and lots of `Person` elements, every of them has `id` and `username` attributes. `id` is unique value for each element:

Code:
<?xml version="1.0" encoding="UTF-8"?>
<Group id="RW_8987"
       dept_id="D_12"
       main="false">

    <Person id="P_0001"
            email="email0001@example.com"
            username="person_0001"
            password="pass_0001"/>

    <Person id="P_0002"
            email="email0002@example.com"
            username="person_0002"
            password="pass_0002"/>

    <!--  ...  -->
</Group>

And I need to use bash script to extract the `id` and `username` attributes into some key-value structure:

Code:
P_0001=person_0001
P_0002=person_0002

Checked other related answers, but most of them suggest to use some XML parsers like xmllint. But unfortunately I do not have them on the target machine.

Can you kindly suggest what how I can achieve this. Thanks in advance.
 

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LEARN ABOUT DEBIAN

dh_installxmlcatalogs

DH_INSTALLXMLCATALOGS(1)					     Debhelper						  DH_INSTALLXMLCATALOGS(1)

NAME

       dh_installxmlcatalogs - install and register XML catalog files

SYNOPSIS

       dh_installxmlcatalogs [debhelper options] [-n]

DESCRIPTION

       dh_installxmlcatalogs is a debhelper program that installs and registers XML catalog files.  It complies with the Debian XML/SGML policy.

       The file debian/package.xmlcatalogs lists the local XML catalog files to be installed per package as well as the XML entities in those
       local XML catalog files that are to be registered in the XML catalog system.

       The local XML catalog file entries in that file should be of the form "local;source;dest", where the verbatim "local" indicates this is an
       entry for a local XML catalog file, "source" indicates where the local XML catalog resides in the source tree, and "dest" indicates the
       destination location for the local XML catalog under the package build area.  "dest" should start with /usr/share/xml/.

       The entries for the XML entities to be registered in the package XML catalog file should be of the form "package;type;id;catalog", where
       the verbatim "package" indicates this is an entry for an XML entity to be registered in the package XML catalog file, "type" indicates the
       XML entity type (public, system, uri), "id" indicates the XML entity id, and "catalog" indicates the local XML catalog file.

       The entries for the XML entities to be registered in the root XML catalog file should be of the form "root;type;id", where the verbatim
       "root" indicates this is an entry for an XML entity to be registered in the root XML catalog file, "type" indicates the XML entity type
       (public, system, uri), and "id" indicates the XML entity id.

       If an entry for is to be registered identically in the root catalog and the package catalog file, you can use the form
       "root-and-package;type;id;catalog", where the verbatim "root-and-package" indicates this is an entry for an XML entity to be registered in
       both the root and package XML catalog files, "type" indicates the XML entity type (public, system, uri), "id" indicates the XML entity id,
       and "catalog" indicates the local XML catalog file.

       XML entity types are described in update-xmlcatalog(8).	Using the "root" or "package" commands, a type of "public" will general
       "delegatePublic" statements in the applicable catalog file. Generally you will want to use the types "public" for any formal public
       identifiers, and "system" for any files on the local filesystem or URLs.  "uri" is only used for non-local files which are not part of the
       external document subset, e.g., they are not used for entities or DTDs.

       dh_installxmlcatalogs automatically adds maintainer script snippets for the registration and unregistration of the listed XML entities in
       the XML catalog system (unless -n is used).   A dependency on the xml-core package will be added to "${misc:Depends}", so be sure to use
       that variable in the file debian/control.  See dh_installdeb(1) for an explanation of Debhelper maintainer script snippets.

OPTIONS

       -n, --noscripts
	   Do not modify postinst/postrm/prerm scripts.

NOTES

       Note that this command is not idempotent. "dh_clean -k" should be called between invocations of this command. Otherwise, it may cause
       multiple instances of the same text to be added to maintainer scripts.

SEE ALSO

       debhelper(7)

       /usr/share/doc/xml-core/

AUTHOR

       Ardo van Rangelrooij <ardo@debian.org>

       Adam Di Carlo <aph@debian.org>

perl v5.14.2							    2012-09-10						  DH_INSTALLXMLCATALOGS(1)
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