Gunnar Ritter scripsit: Thanks! This will be very helpful. I found two portability problems: "install" on modern systems is not in /usr/ucb (in fact, there is no /usr/ucb), and the definition of nodenamelength in mpwlib/lockit.c uses the non-portable constant SYS_NMLN. I changed this to the constant 257, which appears to be the usual default value. -- John Cowan cowan(a)ccil.org http://ccil.org/~cowan No man is an island, entire of itself; every man is a piece of the continent, a part of the main. If a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as if a manor of thy friends or of thine own were: any man's death diminishes me, because I am involved in mankind, and therefore never send to know for whom the bell tolls; it tolls for thee. --John Donne