Trying to embed newline when concat two string variables in Bash

 

1. Inserting \n

    p="${var1}\n${var2}"
    echo -e "${p}"
   

2. Inserting a new line in the source code

    p="${var1}
    ${var2}"
    echo "${p}"
   

3. Using $'\n' (only Bash and Z shell)

    p="${var1}"$'\n'"${var2}"
    echo "${p}"

from: https://stackoverflow.com/questions/9139401/trying-to-embed-newline-in-a-variable-in-bash