along the same lines: %find /usr/include -name sched.h /usr/include/sched.h /usr/include/sys/sched.h %ls -l /usr/include/sched.h lrwxr-xr-x 1 root wheel 24 Jul 26 19:01 /usr/include/sched.h -> emulation/posix4/sched.h cheers simon