1*549bbb4fSJilles Tjoelker 2*549bbb4fSJilles Tjoelkerx=X 3*549bbb4fSJilles Tjoelkerunset n 4*549bbb4fSJilles Tjoelkerr=${x+$(echo a)}${x-$(echo b)}${n+$(echo c)}${n-$(echo d)}$(echo e) 5*549bbb4fSJilles Tjoelker[ "$r" = aXde ] 6