How to use sed/grep to extract text between two words?

Question

I am trying to output a string that contains everything between two words of a string:

input:

\"Here is a String\"

output:

Answer 1

All the above solutions have deficiencies where the last search string is repeated elsewhere in the string. I found it best to write a bash function.

    function str_str {
      local str
      str="${1#*${2}}"
      str="${str%%$3*}"
      echo -n "$str"
    }

    # test it ...
    mystr="this is a string"
    str_str "$mystr" "this " " string"