title: List only Red Hat satellite child channel,per base channel
body: <p>I am writing bash script to replicate channels from one satellite to another.</p>
  
  <p>I want to get only the list of child channels for the base channel:
  clone-rhel-x86_64-server.</p>
  
  <p>I have intentionally used grep -E -A10 to give the option output of
  up to 10 child channels.</p>
  
  <p>Right now I am getting:</p>
  
  <pre><code>rhn-satellite-exporter --list-channels |grep -E -A10 '(^| )clone-rhel-x86_64-server( |$)'|grep  -v "^B"
  C       child_channel1
  C       child_channel2
  C       child_channel3
  
  C       child_channel4
  C       child_channel5
  C       child_channel7
  </code></pre>
  
  <p>My purpose is go get only the first section, i.e. only the child channels.</p>
  
  <p>For base channel: clone-rhel-x86_64-server</p>
  
  <pre><code>rhn-satellite-exporter --list-channels |grep -E -A10 '(^| )clone-rhel-x86_64-server( |$)'|grep  -v "^B"
  C       child_channel1
  C       child_channel2
  C       child_channel3
  </code></pre>
  
  <p>How do I achieve that?</p>