new utilities.

the .C files compile but are renamed to avoid building automatically.

src/cmd/date.c

@@ -0,0 +1,30 @@
+#include <u.h>
+#include <libc.h>
+
+int uflg, nflg;
+
+void
+main(int argc, char *argv[])
+{
+	ulong now;
+
+	ARGBEGIN{
+	case 'n':	nflg = 1; break;
+	case 'u':	uflg = 1; break;
+	default:	fprint(2, "usage: date [-un] [seconds]\n"); exits("usage");
+	}ARGEND
+
+	if(argc == 1)
+		now = strtoul(*argv, 0, 0);
+	else
+		now = time(0);
+
+	if(nflg)
+		print("%ld\n", now);
+	else if(uflg)
+		print("%s", asctime(gmtime(now)));
+	else
+		print("%s", ctime(now));
+	
+	exits(0);
+}