vacation : /usr/src/usr.bin/vacation/vacation.c /usr/include/sys/param.h \
  /usr/include/sys/types.h /usr/include/machine/endian.h \
  /usr/include/sys/cdefs.h /usr/include/machine/ansi.h \
  /usr/include/machine/types.h /usr/include/sys/syslimits.h \
  /usr/include/sys/signal.h /usr/include/machine/signal.h \
  /usr/include/machine/trap.h /usr/include/machine/param.h \
  /usr/include/machine/psl.h /usr/include/machine/limits.h \
  /usr/include/sys/stat.h /usr/include/sys/time.h /usr/include/time.h \
  /usr/include/fcntl.h /usr/include/pwd.h /usr/include/db.h \
  /usr/include/syslog.h /usr/include/tzfile.h /usr/include/errno.h \
  /usr/include/unistd.h /usr/include/sys/unistd.h /usr/include/stdio.h \
  /usr/include/ctype.h /usr/include/stdlib.h /usr/include/string.h \
  /usr/include/paths.h 
