title: Find and replace strings in bash
body: <p>I have XML file, this file has to be changed each time i'm running my scripts, i have to find a specific line there</p>
  
  <p><code>&lt;data key='user.CC_MVFSModuleKernelPath,com.ibm.rational.clearcase.linux_x86' value='/lib/modules/2.6.32-279.el6.i686/build'/&gt;</code> </p>
  
  <p>I can't be sure that this line will be at the same line number, is there any way to find this line, and replcae the value which is <code>'/lib/modules/2.6.32-279.el6.i686/build'</code>.</p>
  
  <p>The input file that i have is:
  <code>&lt;data key='user.Common_AdminDir' value='/var/adm/rational'/&gt;
      &lt;data key='user.Common_TempDir' value='/tmp'/&gt;
      &lt;data key='user.CC_LICENSE_MANAGER,com.ibm.rational.clearcase.linux_x86' value='IBMRCL'/&gt;
      &lt;data key='user.ATRIA_HOST_IS_REMOTE,com.ibm.rational.clearcase.linux_x86' value=''/&gt;
      &lt;data key='user.ATRIA_REMOTE_HOSTNAME,com.ibm.rational.clearcase.linux_x86' value=''/&gt;
      &lt;data key='user.ATRIA_LOCAL_KEY,com.ibm.rational.clearcase.linux_x86' value=''/&gt;
      &lt;data key='user.CC_IS_ATRIA_LICENSE,com.ibm.rational.clearcase.linux_x86' value='false'/&gt;
      &lt;data key='user.CC_MVFSModuleKernelPath,com.ibm.rational.clearcase.linux_x86' value='/lib/modules/2.6.32-279.el6.i686/build'/&gt;
      &lt;data key='user.CC_MVFSModuleRebuild,com.ibm.rational.clearcase.linux_x86' value='1'/&gt;
  </code>
  I need to replace the value that is in the line which holds the next string  - <code>MVFSModuleKernelPath,com.ibm.rational.clearcase</code> 
  I don't know what is the current in this line so the search pattern can't include the the string in the value  -  and i need to replace it with a new value for example <code>echo /lib/modules/</code>uname -r<code>/build</code> this value will be in some variable <code>valueToInsert</code>
  I want to be able to print just value in the virst place and put in some variable in order to compare with my existing kernel version and then replace it </p>