Richards-MacBook-Pro:test2 richard$ echo "this is nonsense" | grep nonsense
this is nonsense
Richards-MacBook-Pro:test2 richard$ make --print-data-base -n | grep something
make[55]: /bin/sh: Resource temporarily unavailable
make[55]: *** wait: No child processes.  Stop.
make[55]: *** Waiting for unfinished jobs....
make[55]: *** wait: No child processes.  Stop.
Richards-MacBook-Pro:test2 richard$ make --print-data-base -n | grep CC
make[55]: /bin/sh: Resource temporarily unavailable
make[55]: *** wait: No child processes.  Stop.
make[55]: *** Waiting for unfinished jobs....
make[55]: *** wait: No child processes.  Stop.
LINK.o = $(CC) $(LDFLAGS) $(TARGET_ARCH)
CC = cc
CPP = $(CC) -E
YACC = yacc
YACC.m = $(YACC) $(YFLAGS)
YACC.y = $(YACC) $(YFLAGS)
LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)
LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
LINK.s = $(CC) $(ASFLAGS) $(LDFLAGS) $(TARGET_MACH)
PREPROCESS.S = $(CC) -E $(CPPFLAGS)
COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c
COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# SCCS: could not be stat'd.
	$(YACC.y) $< 
	$(YACC.y) $< 
	$(YACC.m) $< 
	$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<
%:: SCCS/s.%
	$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<
	$(YACC.y) $< 
	$(YACC.m) $< 
	$(YACC.y) $< 
Richards-MacBook-Pro:test2 richard$