10 Dec 1997 lsof 4.21 (latest revision at ftp://vic.cc.purdue.edu/pub/tools/unix/lsof) "Michael A. Hovan III" This version is really old. If you grab the latest version from: ftp://vic.cc.purdue.edu/pub/tools/unix/lsof and add the following two lines to the lsof.h file after configuring it: #include #include right after the "#include " line it compiles fine under nextstep 3.3. Distribution includes: lsof Striped QuadFat lsof.h necessary modified file (see above) lsof.8 man page README this file