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Full Discussion: Find and update line in xml file
Top Forums Shell Programming and Scripting Find and update line in xml file Post 302921962 by brichigo on Tuesday 21st of October 2014 11:12:25 AM
Old 10-21-2014
Find and update line in xml file
Hi,

I have a xml file that I need to modify 1 line to change some value from 2 to 10 (or any number).

Sample input:
Code:
<!-- some text here>
.
.
.
<message:test name="ryan">
     <message:sample-channel charset="UTF-8" max-value="2" wait="20">
         <message:sample>test123</message:sample>
     </message:sample-channel>
</message:test>

Basically, I only need to update the max-value from 2 to any number (i.e. 10). However, there are multiple occurrences of the ff line in the xml.
Code:
<message:sample-channel charset="UTF-8" max-value="2" wait="20">

The only unique line that can be used as pattern is '<message:test name="ryan">'

Is there a sed or awk command that can be used to update the max-value?
 

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tapconvert

TAPCONVERT(1)															     TAPCONVERT(1)

NAME

       tapconvert - convert Twisted configurations from one format to another

SYNOPSIS

       tapconvert -i input -o output [-f input-type] [-t output-type] [-d] [-e]

       tapconvert --help

DESCRIPTION

       The --help prints out a usage message to standard output.

       --in, -i <input file>
	      The name of the input configuration.

       --out, -o <output file>
	      The name of the output configuration.

       --typein, -f <input type>
	      The type of the input file. Can be either 'guess', 'python', 'pickle', 'xml', or	'source'. Default is 'guess'.

       --typeout, -t <output type>
	      The type of the output file. Can be either 'pickle', 'xml', or  'source'. Default is 'source'.

       --decrypt, -d
	      Decrypt the specified tap/aos/xml input file.

       --encrypt, -e
	      Encrypt output file before writing.

       --version
	      Output version information and exit.

AUTHOR

       Written by Moshe Zadka, based on tapconvert's help messages

REPORTING BUGS

       To report a bug, visit http://twistedmatrix.com/bugs/

COPYRIGHT

       Copyright (C) 2000-2012 Twisted Matrix Laboratories.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

								     July 2001							     TAPCONVERT(1)
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