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Top Forums Shell Programming and Scripting Extracting the value of an attribute tag from XML Post 302416213 by alister on Sunday 25th of April 2010 03:23:02 PM
Old 04-25-2010
Hello, JesterMania and welcome to the forums.

Assuming that all the relevant lines match the format of your sample data, if you have the value of the NAME attribute in a shell variable ($name in what follows), you can extract the value with the following AWK snippet:

Code:
$ name=Memory
$ awk -F\" -v n="$name" '/<ATTRIBUTE NAME="/ && $2==n {print $4}' data
512MB
$ name="CPU Speed"
$ awk -F\" -v n="$name" '/<ATTRIBUTE NAME="/ && $2==n {print $4}' data
3.0GHz
$ name="Video Card"
$ awk -F\" -v n="$name" '/<ATTRIBUTE NAME="/ && $2==n {print $4}' data
4870

Regards,
Alister
 

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HOTSWAPRC(5)							File Formats Manual						      HOTSWAPRC(5)

NAME
hotswaprc - configuration file for hotswap DESCRIPTION
/etc/hotswaprc is the global configuration file for the hotswap utility. It allows system administrators to specify arbitrary shell scripts to be run after a device is inserted, as well as before and after it is removed. Scripts are selected according to the model name retrieved from the device. This is particularly helpful for automatic configura- tion of CD-RW drives, which require SCSI emulation and bypass normal access via the IDE subsystem. hotswaprc is implemented as an Extensible Mark-up Language (XML) application. XML documents are structured using elements of the form <tag-name> content <tag-name>. A Document Type Definition (DTD) describes the possible content of each element. Please refer to the XML specification for more information. The hotswap distribution also contains an example file, doc/hotswaprc.example, which includes the DTD for the configuration file format. ELEMENTS
<hotswap> This is the root element of the document. Each valid hotswaprc must contain exactly one <hotswap> element. The <hotswap> element may contain an arbitrary number of <device> elements. <device> The configuration file contains one <device> element for every device for which scripts are defined. The <device> element is com- posed of the following elements in this order: <name>, <post-insert>, <pre-remove>, <post-remove>. All but <name> are optional. <name> The content of this element is the model identification string of the IDE device the current <device> element refers to. <post-insert> Contains the shell script that is to be executed after the device has been inserted and registered with the kernel. <pre-remove> Contains the shell script that is to be run before hotswap attempts to unregister the device. <post-remove> Contains the shell script that is to be run after the device had been unregistered. REPORT BUGS
Report bugs to t.stadelmann1@physics.ox.ac.uk. AUTHOR
Written by Tim Stadelmann. SEE ALSO
hotswap(1), xhotswap(1). COPYRIGHT
Copyright (c) 2002-2003 Tim Stadelmann. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License (GPL), Version 2 or any later version published by the Free Software Foundation. 26th November 2002 HOTSWAPRC(5)
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