title: Upgrade bash,but bash --version no change,why
body: <p>For Shellshock issue
  I upgrade bash on redhat 4,5 use the follow steps</p>
  
  <ol>
  <li><p>check bash version</p>
  
  <p><code>root@aaaA:/usr/src/redhat/RPMS/x86_64&gt;bash --version</code>
  <code>GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)</code>
  <code>Copyright (C) 2005 Free Software Foundation, Inc.</code></p></li>
  <li><p>upgrade bash</p>
  
  <p><code>rpmbuild --rebuild -bb bash-3.2-33.el5_11.4.src.rpm</code><br>
  <code>cd /usr/src/redhat/RPMS/x86_64/</code><br>
  <code>root@aaa:/usr/src/redhat/RPMS/x86_64&gt;rpm -Uvh bash-*</code>
  <code>Preparing...                ########################################### [100%]</code>
  <code>1:bash                   ########################################### [ 50%]</code>
  <code>2:bash-debuginfo         ########################################### [100%]</code></p></li>
  <li><p>check bash version again</p></li>
  </ol>
  
  <p><code>root@aaa:/usr/src/redhat/RPMS/x86_64&gt;bash --version</code>
  <code>GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)</code>
  <code>Copyright (C) 2005 Free Software Foundation, Inc.</code></p>
  
  <ol start="4">
  <li>reboot and check bash version again</li>
  </ol>
  
  <p><code>root@aaa:/usr/src/redhat/RPMS/x86_64&gt;bash --version</code>
  <code>GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)</code>
  <code>Copyright (C) 2005 Free Software Foundation, Inc.</code></p>
  
  <ol start="5">
  <li>check rpm</li>
  </ol>
  
  <p><code>root@aaa:/usr/src/redhat/RPMS/x86_64&gt;rpm -qa | grep bash</code>
  <code>bash-3.2-33.4</code>
  <code>bash-debuginfo-3.2-33.4</code></p>
  
  <p>Why bash version no change to bash-3.2-33.4</p>