#!/bin/bash

function badCode {
echo "bad code executed"
}

function testCode {
#pick some existing file
echo "/etc/passwd"
}

function tfunc {
  local foo=
  foo="$(testCode)" || {echo "foo";}
  cat "$foo" || { 
        badCode
        case $? in
         *) 
           exit 1
        esac
}
}

echo "Finished."