1Posix says we should execute the command as if run by system(3) 2Expect 'Hello,' and 'World!' 3Hello, 4World! 5a command 6a command prefixed by '+' executes even with -n 7another command 8make -n 9echo a command 10echo "a command prefixed by '+' executes even with -n" 11a command prefixed by '+' executes even with -n 12echo another command 13make -n -j1 14{ echo a command 15} || exit $? 16echo "a command prefixed by '+' executes even with -n" 17a command prefixed by '+' executes even with -n 18{ echo another command 19} || exit $? 20Now we expect an error... 21*** Error code 1 (continuing) 22`all' not remade because of errors. 23exit status 0 24