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Full Discussion: Removing leading spaces from the variable value.
Top Forums Shell Programming and Scripting Removing leading spaces from the variable value. Post 302357061 by khedu on Monday 28th of September 2009 02:34:05 PM
Old 09-28-2009
Question Removing leading spaces from the variable value.
Hi All,

I am trying to replace the value of a xml tag with a new one. But, the existing value in the xml contain leading spaces and I tried to remove that with different sed commands but all in vain.

For replacing the value I wrote the command in BOLD letters below:

bash-3.00$ polnum=`grep "<PolNumber>" adi99.xml | sed 's:<PolNumber>::;s:</PolNumber>::' | sed 's/^ *\(.*\) *$/\1/'`
bash-3.00$ echo "PolNumber is:"$polnum
PolNumber is: 109301793
newpol=101101
bash-3.00$ echo "cat adi99.xml | sed -e 's/${polnum}/${newpol}/'"

cat adi99.xml | sed -e 's/"THERE ARE SPACES WHICH ARE GETTING REMOVED HERE ONCE I SAVE IT HERE" 109301793/101101/'


cat adi99.xml
<Holding id="Holding_1">
<Policy id="Policy_1">
<PolNumber>109301793</PolNumber>
</Policy>
</Holding>



Can you please suggest a way to remove these spaces.
Last edited by khedu; 09-28-2009 at 03:44 PM..
 

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LEARN ABOUT DEBIAN

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 1.1.7 						    April 2012							      PACEMAKER(8)
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