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Top Forums UNIX for Beginners Questions & Answers Extract XML block when value is matched (Shell script) Post 303036200 by Pouky on Wednesday 19th of June 2019 02:23:59 AM
Old 06-19-2019
First of all thank you for your response jgt Smilie
The answer that you gave me isn't actually the result that I want to achieve. (My explanation isn't clear also, so the fault lies with me)
I'll try to explain it a little better.


So we have log files in our VM's and we get information from some devices through Sim cards. Due to bad practices of our sub-contractors, we have to fetch some information through the logs.
But because we have more than 4k devices that sends logs daily we have to retrieve within those +400k line log files what kind of information it sent.


The snippet that I've put in my initial post is actually the final result that I want from the log files. So you could say that above and below my snippet there is a multitude of information and xml syntax that i don't really need.


Unfortunately there isn't really a specific line where I have to look for.
Code:
if [ "${line:0:7}" = "<devID>" ]

The only thing I noticed is that my block could also start from:

Code:
2019-06-16 20:20:11,901 | INFO  | r[VSDCFE_ALARMS] | vsdc                             | 94 - org.apache.camel.camel-core - 2.17.3 | VSDCFE_ALARMS: Device alarm isssue message received contains {"time":"2019-06-16T18:20:10","deviceId":"number","alarms":[{"obis":"0;0;97;98;20;255","attributeId":"2","classId":"1","value":"0600000000"},{"obis":"0;0;97;98;21;255","attributeId":"2","classId":"1","value":"0600000000"},{"obis":"0;0;97;98;22;255","attributeId":"2","classId":"1","value":"0600800000"}]}

and end with

Code:
</alarms>

so everything in between has to be included into the output. Note also that not all "blocks" aren't the same. Depending on the information it could contain 10 or more lines for each device.
 

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GNOME-XML(1)							       1.1.0							      GNOME-XML(1)

NAME
xml-config - script to get information about the installed version of GNOME-XML SYNOPSIS
xml-config [--prefix[=DIR]] [--libs] [--cflags] [--version] [--help] DESCRIPTION
xml-config is a tool that is used to determine the compile and linker flags that should be used to compile and link programs that use GNOME-XML. OPTIONS
xml-config accepts the following options: --version Print the currently installed version of GNOME-XML on the standard output. Add the --static option to print the linker flags that are necessary to statically link a GNOME-XML program. --libs Print the linker flags that are necessary to link a GNOME-XML program. --cflags Print the compiler flags that are necessary to compile a GNOME-XML program. --prefix=PREFIX If specified, use PREFIX instead of the installation prefix that GNOME-XML was built with when computing the output for the --cflags and --libs options. This option must be specified before any --libs or --cflags options. AUTHOR
This manual page was written by Fredrik Hallenberg <hallon@lysator.liu.se>, for the Debian GNU/linux system (but may be used by others). Version 3 July 1999 GNOME-XML(1)
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