1*549bbb4fSJilles Tjoelker 2*549bbb4fSJilles Tjoelkerb=200 c=30 d=5 x=4 3*549bbb4fSJilles Tjoelkerr=$(echo a)$(($(echo b) + ${x+$(echo c)} + ${x-$(echo d)}))$(echo e) 4*549bbb4fSJilles Tjoelker[ "$r" = a234e ] 5