HelenOS sources

LS_BOGUS          361 uspace/app/bdsh/cmds/modules/ls/ls.c 		case LS_BOGUS:
LS_BOGUS          382 uspace/app/bdsh/cmds/modules/ls/ls.c 		return LS_BOGUS;
LS_BOGUS          390 uspace/app/bdsh/cmds/modules/ls/ls.c 	return LS_BOGUS;
LS_BOGUS          499 uspace/app/bdsh/cmds/modules/ls/ls.c 	case LS_BOGUS:

HelenOS homepage, sources at GitHub