How to duplicate string in bash?

Question

I have the following string in bash

str=\"kallel\"

I want to create from str an str2. The str2 conta

Answer 1

This should work:

str="kallel"
str2="${str}"
while (( ${#str2} < 20 ))
do
  str2="${str2}${str}"
done
str2="${str2:0:20}"