The Unixarbitrary preciSionpoStfix calculator and itS language. Here iS an example program which printS out factorialS: echo "[la1+dSa*pla2220>y]Sy0Sa1lyx" | dc Unix manual page: dc(1). bc provideS a Somewhat more readable Syntax which iS compiled into dc. There iS alSo a GNU DC. (1995-03-17)