title: How to count frequency of amno acids of different proteins from one FASTA file with bash script?
body: <p>how I have to write a script, which can count frequency of amino acids of different proteins,which are in one file? 
  For example:</p>
  
  <pre><code>Fasta file is
  
  &gt;Protein1 info
  ATCGGGCTGC
  &gt;Protein2 info
  ATCGGGCTGCGGCC
  &gt;Protein2 info
  ATCGGGCTGCGGCCCCC
  .............
  
  
  I have to get :
  Protein 1
  A:10% T:20% G:40% C:30%
  Protein 2
  A:7.143% T: 14,286 G: 42,858 C:35,715
  ...............
  </code></pre>