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Full Discussion: Extract string from XML
Top Forums Shell Programming and Scripting Extract string from XML Post 302769048 by mohtashims on Monday 11th of February 2013 05:59:32 AM
Old 02-11-2013
Scissors Extract string from XML
Hi,

I wish to grep for the first instance of <listen-address> value between the first <server></server> tag in an xml file.

Sample xml:



Code:
.........
    <timeout-seconds>1500</timeout-seconds>
  </jta>
  <server>
    <name>Adminserver_DEV</name>
    <listen-address>myadminhost</listen-address>
  </server>
  <server>
    <name>managed_core</name>
<listen-address>secondadminhost</listen-address>
    <ssl>
      <enabled>false</enabled>
......

Desired Result: myadminhost

If<listen-address></listen-address> is blank or not present in the first <server></server> tag then the desired result should be the hostname of the server excuting the script.

Thank you.!!
 

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LEARN ABOUT CENTOS

crm_diff

PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME

       Pacemaker - Part of the Pacemaker cluster resource manager

SYNOPSIS

       crm_diff original_xml operation [options]

DESCRIPTION

       crm_diff - A utility for comparing Pacemaker configurations (XML format)

       The tool produces a custom (diff-like) output which it can also apply like a patch

OPTIONS

       -?, --help
	      This text

       -$, --version
	      Version information

       -V, --verbose
	      Increase debug output

   Original XML:
       -o, --original=value
	      XML is contained in the named file

       -O, --original-string=value
	      XML is contained in the supplied string

   Operation:
       -n, --new=value
	      Compare the original XML to the contents of the named file

       -N, --new-string=value
	      Compare the original XML to the contents of the supplied string

       -p, --patch=value
	      Patch the original XML with the contents of the named file

   Additional Options:
       -c, --cib
	      Compare/patch the inputs as a CIB (includes versions details)

       -f, --filter
	      Suppress irrelevant differences between the two inputs

EXAMPLES

       Obtain the two different configuration files by running cibadmin on the two cluster setups to compare:

	      # cibadmin --query > cib-old.xml

	      # cibadmin --query > cib-new.xml

       Calculate and save the difference between the two files:

	      # crm_diff --original cib-old.xml --new cib-new.xml > patch.xml

       Apply the patch to the original file:

	      # crm_diff --original cib-old.xml --patch patch.xml > updated.xml

       Apply the patch to the running cluster:

	      # cibadmin --patch patch.xml

AUTHOR

       Written by Andrew Beekhof

REPORTING BUGS

       Report bugs to pacemaker@oss.clusterlabs.org

Pacemaker 1.1.10-29.el7 					     June 2014							      PACEMAKER(8)
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