title: Generate random char in bash
body: <p>I need to generate a huge text.</p>
  
  <p>I'm using bash and I want to convert an integer number like <code>65</code> to a char like <code>A</code>.
  So I use random value between <code>0</code> and <code>255</code> (I need all the ASCII table), convert to a char and redirect to a file using <code>&gt;&gt;</code>.
  But I cannot make <code>bash</code> interpret the integer as a char.
  Like <code>printf("%c", 65)</code> in C++.
  But if I try this in bash, it returns 6.</p>